20390175

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{6971}}^1$

素因数の和:7000

約数の個数: 36

約数和(自身を含む): 39336024

約数和(自身を除く): 18945849

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 6971, 20913, 34855, 62739, 90623, 104565, 174275, 271869, 313695, 453115, 522825, 815607, 1359345, 1568475, 2265575, 4078035, 6796725, 20390175]

約数ペア:

[(1, 20390175), (3, 6796725), (5, 4078035), (9, 2265575), (13, 1568475), (15, 1359345), (25, 815607), (39, 522825), (45, 453115), (65, 313695), (75, 271869), (117, 174275), (195, 104565), (225, 90623), (325, 62739), (585, 34855), (975, 20913), (2925, 6971)]