61398640

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1823}}^1$

素因数の和:2257

約数の個数: 40

約数和(自身を含む): 143169408

約数和(自身を除く): 81770768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 842, 1684, 1823, 2105, 3368, 3646, 4210, 6736, 7292, 8420, 9115, 14584, 16840, 18230, 29168, 33680, 36460, 72920, 145840, 767483, 1534966, 3069932, 3837415, 6139864, 7674830, 12279728, 15349660, 30699320, 61398640]

約数ペア:

[(1, 61398640), (2, 30699320), (4, 15349660), (5, 12279728), (8, 7674830), (10, 6139864), (16, 3837415), (20, 3069932), (40, 1534966), (80, 767483), (421, 145840), (842, 72920), (1684, 36460), (1823, 33680), (2105, 29168), (3368, 18230), (3646, 16840), (4210, 14584), (6736, 9115), (7292, 8420)]