28739880

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:145

約数の個数: 256

約数和(自身を含む): 108864000

約数和(自身を除く): 80124120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 23, 24, 26, 27, 30, 36, 39, 40, 45, 46, 52, 54, 60, 65, 69, 72, 78, 89, 90, 92, 104, 108, 115, 117, 120, 130, 135, 138, 156, 178, 180, 184, 195, 207, 216, 230, 234, 260, 267, 270, 276, 299, 312, 345, 351, 356, 360, 390, 414, 445, 460, 468, 520, 534, 540, 552, 585, 598, 621, 690, 702, 712, 780, 801, 828, 890, 897, 920, 936, 1035, 1068, 1080, 1157, 1170, 1196, 1242, 1335, 1380, 1404, 1495, 1560, 1602, 1656, 1755, 1780, 1794, 2047, 2070, 2136, 2314, 2340, 2392, 2403, 2484, 2670, 2691, 2760, 2808, 2990, 3105, 3204, 3471, 3510, 3560, 3588, 4005, 4094, 4140, 4485, 4628, 4680, 4806, 4968, 5340, 5382, 5785, 5980, 6141, 6210, 6408, 6942, 7020, 7176, 8010, 8073, 8188, 8280, 8970, 9256, 9612, 10235, 10413, 10680, 10764, 11570, 11960, 12015, 12282, 12420, 13455, 13884, 14040, 16020, 16146, 16376, 17355, 17940, 18423, 19224, 20470, 20826, 21528, 23140, 24030, 24564, 24840, 26611, 26910, 27768, 30705, 31239, 32040, 32292, 34710, 35880, 36846, 40365, 40940, 41652, 46280, 48060, 49128, 52065, 53222, 53820, 55269, 61410, 62478, 64584, 69420, 73692, 79833, 80730, 81880, 83304, 92115, 96120, 104130, 106444, 107640, 110538, 122820, 124956, 133055, 138840, 147384, 156195, 159666, 161460, 184230, 208260, 212888, 221076, 239499, 245640, 249912, 266110, 276345, 312390, 319332, 322920, 368460, 399165, 416520, 442152, 478998, 532220, 552690, 624780, 638664, 718497, 736920, 798330, 957996, 1064440, 1105380, 1197495, 1249560, 1436994, 1596660, 1915992, 2210760, 2394990, 2873988, 3193320, 3592485, 4789980, 5747976, 7184970, 9579960, 14369940, 28739880]

約数ペア:

[(1, 28739880), (2, 14369940), (3, 9579960), (4, 7184970), (5, 5747976), (6, 4789980), (8, 3592485), (9, 3193320), (10, 2873988), (12, 2394990), (13, 2210760), (15, 1915992), (18, 1596660), (20, 1436994), (23, 1249560), (24, 1197495), (26, 1105380), (27, 1064440), (30, 957996), (36, 798330), (39, 736920), (40, 718497), (45, 638664), (46, 624780), (52, 552690), (54, 532220), (60, 478998), (65, 442152), (69, 416520), (72, 399165), (78, 368460), (89, 322920), (90, 319332), (92, 312390), (104, 276345), (108, 266110), (115, 249912), (117, 245640), (120, 239499), (130, 221076), (135, 212888), (138, 208260), (156, 184230), (178, 161460), (180, 159666), (184, 156195), (195, 147384), (207, 138840), (216, 133055), (230, 124956), (234, 122820), (260, 110538), (267, 107640), (270, 106444), (276, 104130), (299, 96120), (312, 92115), (345, 83304), (351, 81880), (356, 80730), (360, 79833), (390, 73692), (414, 69420), (445, 64584), (460, 62478), (468, 61410), (520, 55269), (534, 53820), (540, 53222), (552, 52065), (585, 49128), (598, 48060), (621, 46280), (690, 41652), (702, 40940), (712, 40365), (780, 36846), (801, 35880), (828, 34710), (890, 32292), (897, 32040), (920, 31239), (936, 30705), (1035, 27768), (1068, 26910), (1080, 26611), (1157, 24840), (1170, 24564), (1196, 24030), (1242, 23140), (1335, 21528), (1380, 20826), (1404, 20470), (1495, 19224), (1560, 18423), (1602, 17940), (1656, 17355), (1755, 16376), (1780, 16146), (1794, 16020), (2047, 14040), (2070, 13884), (2136, 13455), (2314, 12420), (2340, 12282), (2392, 12015), (2403, 11960), (2484, 11570), (2670, 10764), (2691, 10680), (2760, 10413), (2808, 10235), (2990, 9612), (3105, 9256), (3204, 8970), (3471, 8280), (3510, 8188), (3560, 8073), (3588, 8010), (4005, 7176), (4094, 7020), (4140, 6942), (4485, 6408), (4628, 6210), (4680, 6141), (4806, 5980), (4968, 5785), (5340, 5382)]