20933475

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6491}}^1$

素因数の和:6547

約数の個数: 24

約数和(自身を含む): 35420352

約数和(自身を除く): 14486877

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 6491, 19473, 32455, 97365, 162275, 279113, 486825, 837339, 1395565, 4186695, 6977825, 20933475]

約数ペア:

[(1, 20933475), (3, 6977825), (5, 4186695), (15, 1395565), (25, 837339), (43, 486825), (75, 279113), (129, 162275), (215, 97365), (645, 32455), (1075, 19473), (3225, 6491)]