20717145

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14851}}^1$

素因数の和:14893

約数の個数: 24

約数和(自身を含む): 37070592

約数和(自身を除く): 16353447

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 14851, 44553, 74255, 133659, 222765, 460381, 668295, 1381143, 2301905, 4143429, 6905715, 20717145]

約数ペア:

[(1, 20717145), (3, 6905715), (5, 4143429), (9, 2301905), (15, 1381143), (31, 668295), (45, 460381), (93, 222765), (155, 133659), (279, 74255), (465, 44553), (1395, 14851)]