64542760

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{3851}}^1$

素因数の和:4281

約数の個数: 32

約数和(自身を含む): 145605600

約数和(自身を除く): 81062840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 838, 1676, 2095, 3352, 3851, 4190, 7702, 8380, 15404, 16760, 19255, 30808, 38510, 77020, 154040, 1613569, 3227138, 6454276, 8067845, 12908552, 16135690, 32271380, 64542760]

約数ペア:

[(1, 64542760), (2, 32271380), (4, 16135690), (5, 12908552), (8, 8067845), (10, 6454276), (20, 3227138), (40, 1613569), (419, 154040), (838, 77020), (1676, 38510), (2095, 30808), (3352, 19255), (3851, 16760), (4190, 15404), (7702, 8380)]