878480

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:231

約数の個数: 40

約数和(自身を含む): 2083200

約数和(自身を除く): 1204720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 139, 158, 278, 316, 395, 556, 632, 695, 790, 1112, 1264, 1390, 1580, 2224, 2780, 3160, 5560, 6320, 10981, 11120, 21962, 43924, 54905, 87848, 109810, 175696, 219620, 439240, 878480]

約数ペア:

[(1, 878480), (2, 439240), (4, 219620), (5, 175696), (8, 109810), (10, 87848), (16, 54905), (20, 43924), (40, 21962), (79, 11120), (80, 10981), (139, 6320), (158, 5560), (278, 3160), (316, 2780), (395, 2224), (556, 1580), (632, 1390), (695, 1264), (790, 1112)]