21631275

素因数分解:

$3^2\times 5^2\times {\mathrm{127}}^1\times {\mathrm{757}}^1$

素因数の和:900

約数の個数: 36

約数和(自身を含む): 39100672

約数和(自身を除く): 17469397

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 127, 225, 381, 635, 757, 1143, 1905, 2271, 3175, 3785, 5715, 6813, 9525, 11355, 18925, 28575, 34065, 56775, 96139, 170325, 288417, 480695, 865251, 1442085, 2403475, 4326255, 7210425, 21631275]

約数ペア:

[(1, 21631275), (3, 7210425), (5, 4326255), (9, 2403475), (15, 1442085), (25, 865251), (45, 480695), (75, 288417), (127, 170325), (225, 96139), (381, 56775), (635, 34065), (757, 28575), (1143, 18925), (1905, 11355), (2271, 9525), (3175, 6813), (3785, 5715)]