64916840

素因数分解:

$2^3\times 5^1\times {\mathrm{1223}}^1\times {\mathrm{1327}}^1$

素因数の和:2561

約数の個数: 32

約数和(自身を含む): 146292480

約数和(自身を除く): 81375640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1223, 1327, 2446, 2654, 4892, 5308, 6115, 6635, 9784, 10616, 12230, 13270, 24460, 26540, 48920, 53080, 1622921, 3245842, 6491684, 8114605, 12983368, 16229210, 32458420, 64916840]

約数ペア:

[(1, 64916840), (2, 32458420), (4, 16229210), (5, 12983368), (8, 8114605), (10, 6491684), (20, 3245842), (40, 1622921), (1223, 53080), (1327, 48920), (2446, 26540), (2654, 24460), (4892, 13270), (5308, 12230), (6115, 10616), (6635, 9784)]