355340420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1\times {\mathrm{941}}^1$

素因数の和:1268

約数の個数: 48

約数和(自身を含む): 759628800

約数和(自身を除く): 404288380

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 239, 316, 395, 478, 790, 941, 956, 1195, 1580, 1882, 2390, 3764, 4705, 4780, 9410, 18820, 18881, 37762, 74339, 75524, 94405, 148678, 188810, 224899, 297356, 371695, 377620, 449798, 743390, 899596, 1124495, 1486780, 2248990, 4497980, 17767021, 35534042, 71068084, 88835105, 177670210, 355340420]

約数ペア:

[(1, 355340420), (2, 177670210), (4, 88835105), (5, 71068084), (10, 35534042), (20, 17767021), (79, 4497980), (158, 2248990), (239, 1486780), (316, 1124495), (395, 899596), (478, 743390), (790, 449798), (941, 377620), (956, 371695), (1195, 297356), (1580, 224899), (1882, 188810), (2390, 148678), (3764, 94405), (4705, 75524), (4780, 74339), (9410, 37762), (18820, 18881)]