439240

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 1008000

約数和(自身を除く): 568760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 139, 158, 278, 316, 395, 556, 632, 695, 790, 1112, 1390, 1580, 2780, 3160, 5560, 10981, 21962, 43924, 54905, 87848, 109810, 219620, 439240]

約数ペア:

[(1, 439240), (2, 219620), (4, 109810), (5, 87848), (8, 54905), (10, 43924), (20, 21962), (40, 10981), (79, 5560), (139, 3160), (158, 2780), (278, 1580), (316, 1390), (395, 1112), (556, 790), (632, 695)]