21083278520

素因数分解:

$2^3\times 5^1\times {\mathrm{1531}}^1\times {\mathrm{344273}}^1$

素因数の和:345815

約数の個数: 32

約数和(自身を含む): 47468499120

約数和(自身を除く): 26385220600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1531, 3062, 6124, 7655, 12248, 15310, 30620, 61240, 344273, 688546, 1377092, 1721365, 2754184, 3442730, 6885460, 13770920, 527081963, 1054163926, 2108327852, 2635409815, 4216655704, 5270819630, 10541639260, 21083278520]

約数ペア:

[(1, 21083278520), (2, 10541639260), (4, 5270819630), (5, 4216655704), (8, 2635409815), (10, 2108327852), (20, 1054163926), (40, 527081963), (1531, 13770920), (3062, 6885460), (6124, 3442730), (7655, 2754184), (12248, 1721365), (15310, 1377092), (30620, 688546), (61240, 344273)]