71484920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:229

約数の個数: 128

約数和(自身を含む): 186278400

約数和(自身を除く): 114793480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 43, 46, 52, 65, 86, 92, 104, 115, 130, 139, 172, 184, 215, 230, 260, 278, 299, 344, 430, 460, 520, 556, 559, 598, 695, 860, 920, 989, 1112, 1118, 1196, 1390, 1495, 1720, 1807, 1978, 2236, 2392, 2780, 2795, 2990, 3197, 3614, 3956, 4472, 4945, 5560, 5590, 5977, 5980, 6394, 7228, 7912, 9035, 9890, 11180, 11954, 11960, 12788, 12857, 14456, 15985, 18070, 19780, 22360, 23908, 25576, 25714, 29885, 31970, 36140, 39560, 41561, 47816, 51428, 59770, 63940, 64285, 72280, 77701, 83122, 102856, 119540, 127880, 128570, 137471, 155402, 166244, 207805, 239080, 257140, 274942, 310804, 332488, 388505, 415610, 514280, 549884, 621608, 687355, 777010, 831220, 1099768, 1374710, 1554020, 1662440, 1787123, 2749420, 3108040, 3574246, 5498840, 7148492, 8935615, 14296984, 17871230, 35742460, 71484920]

約数ペア:

[(1, 71484920), (2, 35742460), (4, 17871230), (5, 14296984), (8, 8935615), (10, 7148492), (13, 5498840), (20, 3574246), (23, 3108040), (26, 2749420), (40, 1787123), (43, 1662440), (46, 1554020), (52, 1374710), (65, 1099768), (86, 831220), (92, 777010), (104, 687355), (115, 621608), (130, 549884), (139, 514280), (172, 415610), (184, 388505), (215, 332488), (230, 310804), (260, 274942), (278, 257140), (299, 239080), (344, 207805), (430, 166244), (460, 155402), (520, 137471), (556, 128570), (559, 127880), (598, 119540), (695, 102856), (860, 83122), (920, 77701), (989, 72280), (1112, 64285), (1118, 63940), (1196, 59770), (1390, 51428), (1495, 47816), (1720, 41561), (1807, 39560), (1978, 36140), (2236, 31970), (2392, 29885), (2780, 25714), (2795, 25576), (2990, 23908), (3197, 22360), (3614, 19780), (3956, 18070), (4472, 15985), (4945, 14456), (5560, 12857), (5590, 12788), (5977, 11960), (5980, 11954), (6394, 11180), (7228, 9890), (7912, 9035)]