20945475

素因数分解:

$3^2\times 5^2\times {\mathrm{127}}^1\times {\mathrm{733}}^1$

素因数の和:876

約数の個数: 36

約数和(自身を含む): 37862656

約数和(自身を除く): 16917181

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 127, 225, 381, 635, 733, 1143, 1905, 2199, 3175, 3665, 5715, 6597, 9525, 10995, 18325, 28575, 32985, 54975, 93091, 164925, 279273, 465455, 837819, 1396365, 2327275, 4189095, 6981825, 20945475]

約数ペア:

[(1, 20945475), (3, 6981825), (5, 4189095), (9, 2327275), (15, 1396365), (25, 837819), (45, 465455), (75, 279273), (127, 164925), (225, 93091), (381, 54975), (635, 32985), (733, 28575), (1143, 18325), (1905, 10995), (2199, 9525), (3175, 6597), (3665, 5715)]