64351960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39239}}^1$

素因数の和:39291

約数の個数: 32

約数和(自身を含む): 148327200

約数和(自身を除く): 83975240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 39239, 78478, 156956, 196195, 313912, 392390, 784780, 1569560, 1608799, 3217598, 6435196, 8043995, 12870392, 16087990, 32175980, 64351960]

約数ペア:

[(1, 64351960), (2, 32175980), (4, 16087990), (5, 12870392), (8, 8043995), (10, 6435196), (20, 3217598), (40, 1608799), (41, 1569560), (82, 784780), (164, 392390), (205, 313912), (328, 196195), (410, 156956), (820, 78478), (1640, 39239)]