251856670

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{643}}^1$

素因数の和:817

約数の個数: 64

約数和(自身を含む): 514128384

約数和(自身を除く): 262271714

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 131, 230, 262, 299, 598, 643, 655, 1286, 1310, 1495, 1703, 2990, 3013, 3215, 3406, 6026, 6430, 8359, 8515, 14789, 15065, 16718, 17030, 29578, 30130, 39169, 41795, 73945, 78338, 83590, 84233, 147890, 168466, 192257, 195845, 384514, 391690, 421165, 842330, 961285, 1095029, 1922570, 1937359, 2190058, 3874718, 5475145, 9686795, 10950290, 19373590, 25185667, 50371334, 125928335, 251856670]

約数ペア:

[(1, 251856670), (2, 125928335), (5, 50371334), (10, 25185667), (13, 19373590), (23, 10950290), (26, 9686795), (46, 5475145), (65, 3874718), (115, 2190058), (130, 1937359), (131, 1922570), (230, 1095029), (262, 961285), (299, 842330), (598, 421165), (643, 391690), (655, 384514), (1286, 195845), (1310, 192257), (1495, 168466), (1703, 147890), (2990, 84233), (3013, 83590), (3215, 78338), (3406, 73945), (6026, 41795), (6430, 39169), (8359, 30130), (8515, 29578), (14789, 17030), (15065, 16718)]