81431630

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{23741}}^1$

素因数の和:23769

約数の個数: 32

約数和(自身を含む): 170942400

約数和(自身を除く): 89510770

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 343, 490, 686, 1715, 3430, 23741, 47482, 118705, 166187, 237410, 332374, 830935, 1163309, 1661870, 2326618, 5816545, 8143163, 11633090, 16286326, 40715815, 81431630]

約数ペア:

[(1, 81431630), (2, 40715815), (5, 16286326), (7, 11633090), (10, 8143163), (14, 5816545), (35, 2326618), (49, 1661870), (70, 1163309), (98, 830935), (245, 332374), (343, 237410), (490, 166187), (686, 118705), (1715, 47482), (3430, 23741)]