78815960

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{13049}}^1$

素因数の和:13211

約数の個数: 32

約数和(自身を含む): 178524000

約数和(自身を除く): 99708040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 6040, 13049, 26098, 52196, 65245, 104392, 130490, 260980, 521960, 1970399, 3940798, 7881596, 9851995, 15763192, 19703990, 39407980, 78815960]

約数ペア:

[(1, 78815960), (2, 39407980), (4, 19703990), (5, 15763192), (8, 9851995), (10, 7881596), (20, 3940798), (40, 1970399), (151, 521960), (302, 260980), (604, 130490), (755, 104392), (1208, 65245), (1510, 52196), (3020, 26098), (6040, 13049)]