21356895

素因数分解:

$3^1\times 5^1\times 7^4\times {\mathrm{593}}^1$

素因数の和:629

約数の個数: 40

約数和(自身を含む): 39931056

約数和(自身を除く): 18574161

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 593, 735, 1029, 1715, 1779, 2401, 2965, 4151, 5145, 7203, 8895, 12005, 12453, 20755, 29057, 36015, 62265, 87171, 145285, 203399, 435855, 610197, 1016995, 1423793, 3050985, 4271379, 7118965, 21356895]

約数ペア:

[(1, 21356895), (3, 7118965), (5, 4271379), (7, 3050985), (15, 1423793), (21, 1016995), (35, 610197), (49, 435855), (105, 203399), (147, 145285), (245, 87171), (343, 62265), (593, 36015), (735, 29057), (1029, 20755), (1715, 12453), (1779, 12005), (2401, 8895), (2965, 7203), (4151, 5145)]