21403070

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2699}}^1$

素因数の和:2780

約数の個数: 32

約数和(自身を含む): 42184800

約数和(自身を除く): 20781730

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 305, 610, 793, 1586, 2699, 3965, 5398, 7930, 13495, 26990, 35087, 70174, 164639, 175435, 329278, 350870, 823195, 1646390, 2140307, 4280614, 10701535, 21403070]

約数ペア:

[(1, 21403070), (2, 10701535), (5, 4280614), (10, 2140307), (13, 1646390), (26, 823195), (61, 350870), (65, 329278), (122, 175435), (130, 164639), (305, 70174), (610, 35087), (793, 26990), (1586, 13495), (2699, 7930), (3965, 5398)]