31131490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^4\times {\mathrm{109}}^1$

素因数の和:168

約数の個数: 40

約数和(自身を含む): 61263180

約数和(自身を除く): 30131690

約数列:

[1, 2, 5, 10, 13, 26, 65, 109, 130, 169, 218, 338, 545, 845, 1090, 1417, 1690, 2197, 2834, 4394, 7085, 10985, 14170, 18421, 21970, 28561, 36842, 57122, 92105, 142805, 184210, 239473, 285610, 478946, 1197365, 2394730, 3113149, 6226298, 15565745, 31131490]

約数ペア:

[(1, 31131490), (2, 15565745), (5, 6226298), (10, 3113149), (13, 2394730), (26, 1197365), (65, 478946), (109, 285610), (130, 239473), (169, 184210), (218, 142805), (338, 92105), (545, 57122), (845, 36842), (1090, 28561), (1417, 21970), (1690, 18421), (2197, 14170), (2834, 10985), (4394, 7085)]