31490265

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1\times {\mathrm{281}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 52411392

約数和(自身を除く): 20921127

約数列:

[1, 3, 5, 15, 31, 93, 155, 241, 281, 465, 723, 843, 1205, 1405, 3615, 4215, 7471, 8711, 22413, 26133, 37355, 43555, 67721, 112065, 130665, 203163, 338605, 1015815, 2099351, 6298053, 10496755, 31490265]

約数ペア:

[(1, 31490265), (3, 10496755), (5, 6298053), (15, 2099351), (31, 1015815), (93, 338605), (155, 203163), (241, 130665), (281, 112065), (465, 67721), (723, 43555), (843, 37355), (1205, 26133), (1405, 22413), (3615, 8711), (4215, 7471)]