20943915

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3571}}^1$

素因数の和:3619

約数の個数: 32

約数和(自身を含む): 37034496

約数和(自身を除く): 16090581

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 85, 115, 255, 345, 391, 1173, 1955, 3571, 5865, 10713, 17855, 53565, 60707, 82133, 182121, 246399, 303535, 410665, 910605, 1231995, 1396261, 4188783, 6981305, 20943915]

約数ペア:

[(1, 20943915), (3, 6981305), (5, 4188783), (15, 1396261), (17, 1231995), (23, 910605), (51, 410665), (69, 303535), (85, 246399), (115, 182121), (255, 82133), (345, 60707), (391, 53565), (1173, 17855), (1955, 10713), (3571, 5865)]