28389010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1667}}^1$

素因数の和:1818

約数の個数: 32

約数和(自身を含む): 55484352

約数和(自身を除く): 27095342

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 131, 262, 655, 1310, 1667, 1703, 3334, 3406, 8335, 8515, 16670, 17030, 21671, 43342, 108355, 216710, 218377, 436754, 1091885, 2183770, 2838901, 5677802, 14194505, 28389010]

約数ペア:

[(1, 28389010), (2, 14194505), (5, 5677802), (10, 2838901), (13, 2183770), (26, 1091885), (65, 436754), (130, 218377), (131, 216710), (262, 108355), (655, 43342), (1310, 21671), (1667, 17030), (1703, 16670), (3334, 8515), (3406, 8335)]