19807390

素因数分解:

$2^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{7309}}^1$

素因数の和:7587

約数の個数: 16

約数和(自身を含む): 35789760

約数和(自身を除く): 15982370

約数列:

[1, 2, 5, 10, 271, 542, 1355, 2710, 7309, 14618, 36545, 73090, 1980739, 3961478, 9903695, 19807390]

約数ペア:

[(1, 19807390), (2, 9903695), (5, 3961478), (10, 1980739), (271, 73090), (542, 36545), (1355, 14618), (2710, 7309)]