21466575

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 42653520

約数和(自身を除く): 21186945

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 41, 45, 65, 75, 117, 123, 179, 195, 205, 225, 325, 369, 533, 537, 585, 615, 895, 975, 1025, 1599, 1611, 1845, 2327, 2665, 2685, 2925, 3075, 4475, 4797, 6981, 7339, 7995, 8055, 9225, 11635, 13325, 13425, 20943, 22017, 23985, 34905, 36695, 39975, 40275, 58175, 66051, 95407, 104715, 110085, 119925, 174525, 183475, 286221, 330255, 477035, 523575, 550425, 858663, 1431105, 1651275, 2385175, 4293315, 7155525, 21466575]

約数ペア:

[(1, 21466575), (3, 7155525), (5, 4293315), (9, 2385175), (13, 1651275), (15, 1431105), (25, 858663), (39, 550425), (41, 523575), (45, 477035), (65, 330255), (75, 286221), (117, 183475), (123, 174525), (179, 119925), (195, 110085), (205, 104715), (225, 95407), (325, 66051), (369, 58175), (533, 40275), (537, 39975), (585, 36695), (615, 34905), (895, 23985), (975, 22017), (1025, 20943), (1599, 13425), (1611, 13325), (1845, 11635), (2327, 9225), (2665, 8055), (2685, 7995), (2925, 7339), (3075, 6981), (4475, 4797)]