21506625

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{2731}}^1$

素因数の和:2759

約数の個数: 48

約数和(自身を含む): 44323968

約数和(自身を除く): 22817343

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 225, 315, 375, 525, 875, 1125, 1575, 2625, 2731, 7875, 8193, 13655, 19117, 24579, 40965, 57351, 68275, 95585, 122895, 172053, 204825, 286755, 341375, 477925, 614475, 860265, 1024125, 1433775, 2389625, 3072375, 4301325, 7168875, 21506625]

約数ペア:

[(1, 21506625), (3, 7168875), (5, 4301325), (7, 3072375), (9, 2389625), (15, 1433775), (21, 1024125), (25, 860265), (35, 614475), (45, 477925), (63, 341375), (75, 286755), (105, 204825), (125, 172053), (175, 122895), (225, 95585), (315, 68275), (375, 57351), (525, 40965), (875, 24579), (1125, 19117), (1575, 13655), (2625, 8193), (2731, 7875)]