21780070

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{701}}^1$

素因数の和:960

約数の個数: 32

約数和(自身を含む): 42456960

約数和(自身を除く): 20676890

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 239, 478, 701, 1195, 1402, 2390, 3107, 3505, 6214, 7010, 9113, 15535, 18226, 31070, 45565, 91130, 167539, 335078, 837695, 1675390, 2178007, 4356014, 10890035, 21780070]

約数ペア:

[(1, 21780070), (2, 10890035), (5, 4356014), (10, 2178007), (13, 1675390), (26, 837695), (65, 335078), (130, 167539), (239, 91130), (478, 45565), (701, 31070), (1195, 18226), (1402, 15535), (2390, 9113), (3107, 7010), (3505, 6214)]