621680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:441

約数の個数: 40

約数和(自身を含む): 1525200

約数和(自身を除く): 903520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 409, 760, 818, 1520, 1636, 2045, 3272, 4090, 6544, 7771, 8180, 15542, 16360, 31084, 32720, 38855, 62168, 77710, 124336, 155420, 310840, 621680]

約数ペア:

[(1, 621680), (2, 310840), (4, 155420), (5, 124336), (8, 77710), (10, 62168), (16, 38855), (19, 32720), (20, 31084), (38, 16360), (40, 15542), (76, 8180), (80, 7771), (95, 6544), (152, 4090), (190, 3272), (304, 2045), (380, 1636), (409, 1520), (760, 818)]