331324240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{318581}}^1$

素因数の和:318607

約数の個数: 40

約数和(自身を含む): 829587528

約数和(自身を除く): 498263288

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 318581, 637162, 1274324, 1592905, 2548648, 3185810, 4141553, 5097296, 6371620, 8283106, 12743240, 16566212, 20707765, 25486480, 33132424, 41415530, 66264848, 82831060, 165662120, 331324240]

約数ペア:

[(1, 331324240), (2, 165662120), (4, 82831060), (5, 66264848), (8, 41415530), (10, 33132424), (13, 25486480), (16, 20707765), (20, 16566212), (26, 12743240), (40, 8283106), (52, 6371620), (65, 5097296), (80, 4141553), (104, 3185810), (130, 2548648), (208, 1592905), (260, 1274324), (520, 637162), (1040, 318581)]