20467785

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2441}}^1$

素因数の和:2505

約数の個数: 32

約数和(自身を含む): 36102528

約数和(自身を除く): 15634743

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 195, 215, 559, 645, 1677, 2441, 2795, 7323, 8385, 12205, 31733, 36615, 95199, 104963, 158665, 314889, 475995, 524815, 1364519, 1574445, 4093557, 6822595, 20467785]

約数ペア:

[(1, 20467785), (3, 6822595), (5, 4093557), (13, 1574445), (15, 1364519), (39, 524815), (43, 475995), (65, 314889), (129, 158665), (195, 104963), (215, 95199), (559, 36615), (645, 31733), (1677, 12205), (2441, 8385), (2795, 7323)]