28387970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1571}}^1$

素因数の和:1730

約数の個数: 32

約数和(自身を含む): 55460160

約数和(自身を除く): 27072190

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 139, 278, 695, 1390, 1571, 1807, 3142, 3614, 7855, 9035, 15710, 18070, 20423, 40846, 102115, 204230, 218369, 436738, 1091845, 2183690, 2838797, 5677594, 14193985, 28387970]

約数ペア:

[(1, 28387970), (2, 14193985), (5, 5677594), (10, 2838797), (13, 2183690), (26, 1091845), (65, 436738), (130, 218369), (139, 204230), (278, 102115), (695, 40846), (1390, 20423), (1571, 18070), (1807, 15710), (3142, 9035), (3614, 7855)]