18810610

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2953}}^1$

素因数の和:2987

約数の個数: 48

約数和(自身を含む): 42431256

約数和(自身を除く): 23620646

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 2953, 3185, 5906, 6370, 14765, 20671, 29530, 38389, 41342, 76778, 103355, 144697, 191945, 206710, 268723, 289394, 383890, 537446, 723485, 1343615, 1446970, 1881061, 2687230, 3762122, 9405305, 18810610]

約数ペア:

[(1, 18810610), (2, 9405305), (5, 3762122), (7, 2687230), (10, 1881061), (13, 1446970), (14, 1343615), (26, 723485), (35, 537446), (49, 383890), (65, 289394), (70, 268723), (91, 206710), (98, 191945), (130, 144697), (182, 103355), (245, 76778), (455, 41342), (490, 38389), (637, 29530), (910, 20671), (1274, 14765), (2953, 6370), (3185, 5906)]