21372975

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7307}}^1$

素因数の和:7336

約数の個数: 36

約数和(自身を含む): 41231736

約数和(自身を除く): 19858761

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7307, 21921, 36535, 65763, 94991, 109605, 182675, 284973, 328815, 474955, 548025, 854919, 1424865, 1644075, 2374775, 4274595, 7124325, 21372975]

約数ペア:

[(1, 21372975), (3, 7124325), (5, 4274595), (9, 2374775), (13, 1644075), (15, 1424865), (25, 854919), (39, 548025), (45, 474955), (65, 328815), (75, 284973), (117, 182675), (195, 109605), (225, 94991), (325, 65763), (585, 36535), (975, 21921), (2925, 7307)]