20157240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:313

約数の個数: 128

約数和(自身を含む): 65862720

約数和(自身を除く): 45705480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 41, 51, 60, 68, 82, 85, 102, 120, 123, 136, 164, 170, 204, 205, 241, 246, 255, 328, 340, 408, 410, 482, 492, 510, 615, 680, 697, 723, 820, 964, 984, 1020, 1205, 1230, 1394, 1446, 1640, 1928, 2040, 2091, 2410, 2460, 2788, 2892, 3485, 3615, 4097, 4182, 4820, 4920, 5576, 5784, 6970, 7230, 8194, 8364, 9640, 9881, 10455, 12291, 13940, 14460, 16388, 16728, 19762, 20485, 20910, 24582, 27880, 28920, 29643, 32776, 39524, 40970, 41820, 49164, 49405, 59286, 61455, 79048, 81940, 83640, 98328, 98810, 118572, 122910, 148215, 163880, 167977, 197620, 237144, 245820, 296430, 335954, 395240, 491640, 503931, 592860, 671908, 839885, 1007862, 1185720, 1343816, 1679770, 2015724, 2519655, 3359540, 4031448, 5039310, 6719080, 10078620, 20157240]

約数ペア:

[(1, 20157240), (2, 10078620), (3, 6719080), (4, 5039310), (5, 4031448), (6, 3359540), (8, 2519655), (10, 2015724), (12, 1679770), (15, 1343816), (17, 1185720), (20, 1007862), (24, 839885), (30, 671908), (34, 592860), (40, 503931), (41, 491640), (51, 395240), (60, 335954), (68, 296430), (82, 245820), (85, 237144), (102, 197620), (120, 167977), (123, 163880), (136, 148215), (164, 122910), (170, 118572), (204, 98810), (205, 98328), (241, 83640), (246, 81940), (255, 79048), (328, 61455), (340, 59286), (408, 49405), (410, 49164), (482, 41820), (492, 40970), (510, 39524), (615, 32776), (680, 29643), (697, 28920), (723, 27880), (820, 24582), (964, 20910), (984, 20485), (1020, 19762), (1205, 16728), (1230, 16388), (1394, 14460), (1446, 13940), (1640, 12291), (1928, 10455), (2040, 9881), (2091, 9640), (2410, 8364), (2460, 8194), (2788, 7230), (2892, 6970), (3485, 5784), (3615, 5576), (4097, 4920), (4182, 4820)]