21266775

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3049}}^1$

素因数の和:3096

約数の個数: 36

約数和(自身を含む): 39332800

約数和(自身を除く): 18066025

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 155, 225, 279, 465, 775, 1395, 2325, 3049, 6975, 9147, 15245, 27441, 45735, 76225, 94519, 137205, 228675, 283557, 472595, 686025, 850671, 1417785, 2362975, 4253355, 7088925, 21266775]

約数ペア:

[(1, 21266775), (3, 7088925), (5, 4253355), (9, 2362975), (15, 1417785), (25, 850671), (31, 686025), (45, 472595), (75, 283557), (93, 228675), (155, 137205), (225, 94519), (279, 76225), (465, 45735), (775, 27441), (1395, 15245), (2325, 9147), (3049, 6975)]