21495825

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7349}}^1$

素因数の和:7378

約数の個数: 36

約数和(自身を含む): 41468700

約数和(自身を除く): 19972875

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7349, 22047, 36745, 66141, 95537, 110235, 183725, 286611, 330705, 477685, 551175, 859833, 1433055, 1653525, 2388425, 4299165, 7165275, 21495825]

約数ペア:

[(1, 21495825), (3, 7165275), (5, 4299165), (9, 2388425), (13, 1653525), (15, 1433055), (25, 859833), (39, 551175), (45, 477685), (65, 330705), (75, 286611), (117, 183725), (195, 110235), (225, 95537), (325, 66141), (585, 36745), (975, 22047), (2925, 7349)]