64794760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39509}}^1$

素因数の和:39561

約数の個数: 32

約数和(自身を含む): 149347800

約数和(自身を除く): 84553040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 39509, 79018, 158036, 197545, 316072, 395090, 790180, 1580360, 1619869, 3239738, 6479476, 8099345, 12958952, 16198690, 32397380, 64794760]

約数ペア:

[(1, 64794760), (2, 32397380), (4, 16198690), (5, 12958952), (8, 8099345), (10, 6479476), (20, 3239738), (40, 1619869), (41, 1580360), (82, 790180), (164, 395090), (205, 316072), (328, 197545), (410, 158036), (820, 79018), (1640, 39509)]