10981000

素因数分解:

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

素因数の和:239

約数の個数: 64

約数和(自身を含む): 26208000

約数和(自身を除く): 15227000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 125, 139, 158, 200, 250, 278, 316, 395, 500, 556, 632, 695, 790, 1000, 1112, 1390, 1580, 1975, 2780, 3160, 3475, 3950, 5560, 6950, 7900, 9875, 10981, 13900, 15800, 17375, 19750, 21962, 27800, 34750, 39500, 43924, 54905, 69500, 79000, 87848, 109810, 139000, 219620, 274525, 439240, 549050, 1098100, 1372625, 2196200, 2745250, 5490500, 10981000]

約数ペア:

[(1, 10981000), (2, 5490500), (4, 2745250), (5, 2196200), (8, 1372625), (10, 1098100), (20, 549050), (25, 439240), (40, 274525), (50, 219620), (79, 139000), (100, 109810), (125, 87848), (139, 79000), (158, 69500), (200, 54905), (250, 43924), (278, 39500), (316, 34750), (395, 27800), (500, 21962), (556, 19750), (632, 17375), (695, 15800), (790, 13900), (1000, 10981), (1112, 9875), (1390, 7900), (1580, 6950), (1975, 5560), (2780, 3950), (3160, 3475)]