64781140

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{6217}}^1$

素因数の和:6747

約数の個数: 24

約数和(自身を含む): 136323432

約数和(自身を除く): 71542292

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 2084, 2605, 5210, 6217, 10420, 12434, 24868, 31085, 62170, 124340, 3239057, 6478114, 12956228, 16195285, 32390570, 64781140]

約数ペア:

[(1, 64781140), (2, 32390570), (4, 16195285), (5, 12956228), (10, 6478114), (20, 3239057), (521, 124340), (1042, 62170), (2084, 31085), (2605, 24868), (5210, 12434), (6217, 10420)]