21628390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9967}}^1$

素因数の和:10012

約数の個数: 32

約数和(自身を含む): 45932544

約数和(自身を除く): 24304154

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, 1085, 2170, 9967, 19934, 49835, 69769, 99670, 139538, 308977, 348845, 617954, 697690, 1544885, 2162839, 3089770, 4325678, 10814195, 21628390]

約数ペア:

[(1, 21628390), (2, 10814195), (5, 4325678), (7, 3089770), (10, 2162839), (14, 1544885), (31, 697690), (35, 617954), (62, 348845), (70, 308977), (155, 139538), (217, 99670), (310, 69769), (434, 49835), (1085, 19934), (2170, 9967)]