21554910

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 160

約数和(自身を含む): 65862720

約数和(自身を除く): 44307810

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 23, 26, 27, 30, 39, 45, 46, 54, 65, 69, 78, 81, 89, 90, 115, 117, 130, 135, 138, 162, 178, 195, 207, 230, 234, 267, 270, 299, 345, 351, 390, 405, 414, 445, 534, 585, 598, 621, 690, 702, 801, 810, 890, 897, 1035, 1053, 1157, 1170, 1242, 1335, 1495, 1602, 1755, 1794, 1863, 2047, 2070, 2106, 2314, 2403, 2670, 2691, 2990, 3105, 3471, 3510, 3726, 4005, 4094, 4485, 4806, 5265, 5382, 5785, 6141, 6210, 6942, 7209, 8010, 8073, 8970, 9315, 10235, 10413, 10530, 11570, 12015, 12282, 13455, 14418, 16146, 17355, 18423, 18630, 20470, 20826, 24030, 24219, 26611, 26910, 30705, 31239, 34710, 36045, 36846, 40365, 48438, 52065, 53222, 55269, 61410, 62478, 72090, 79833, 80730, 92115, 93717, 104130, 110538, 121095, 133055, 156195, 159666, 165807, 184230, 187434, 239499, 242190, 266110, 276345, 312390, 331614, 399165, 468585, 478998, 552690, 718497, 798330, 829035, 937170, 1197495, 1436994, 1658070, 2155491, 2394990, 3592485, 4310982, 7184970, 10777455, 21554910]

約数ペア:

[(1, 21554910), (2, 10777455), (3, 7184970), (5, 4310982), (6, 3592485), (9, 2394990), (10, 2155491), (13, 1658070), (15, 1436994), (18, 1197495), (23, 937170), (26, 829035), (27, 798330), (30, 718497), (39, 552690), (45, 478998), (46, 468585), (54, 399165), (65, 331614), (69, 312390), (78, 276345), (81, 266110), (89, 242190), (90, 239499), (115, 187434), (117, 184230), (130, 165807), (135, 159666), (138, 156195), (162, 133055), (178, 121095), (195, 110538), (207, 104130), (230, 93717), (234, 92115), (267, 80730), (270, 79833), (299, 72090), (345, 62478), (351, 61410), (390, 55269), (405, 53222), (414, 52065), (445, 48438), (534, 40365), (585, 36846), (598, 36045), (621, 34710), (690, 31239), (702, 30705), (801, 26910), (810, 26611), (890, 24219), (897, 24030), (1035, 20826), (1053, 20470), (1157, 18630), (1170, 18423), (1242, 17355), (1335, 16146), (1495, 14418), (1602, 13455), (1755, 12282), (1794, 12015), (1863, 11570), (2047, 10530), (2070, 10413), (2106, 10235), (2314, 9315), (2403, 8970), (2670, 8073), (2691, 8010), (2990, 7209), (3105, 6942), (3471, 6210), (3510, 6141), (3726, 5785), (4005, 5382), (4094, 5265), (4485, 4806)]