405904870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{81671}}^1$

素因数の和:81756

約数の個数: 32

約数和(自身を含む): 846775296

約数和(自身を除く): 440870426

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4970, 81671, 163342, 408355, 571697, 816710, 1143394, 2858485, 5716970, 5798641, 11597282, 28993205, 40590487, 57986410, 81180974, 202952435, 405904870]

約数ペア:

[(1, 405904870), (2, 202952435), (5, 81180974), (7, 57986410), (10, 40590487), (14, 28993205), (35, 11597282), (70, 5798641), (71, 5716970), (142, 2858485), (355, 1143394), (497, 816710), (710, 571697), (994, 408355), (2485, 163342), (4970, 81671)]