64315880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39217}}^1$

素因数の和:39269

約数の個数: 32

約数和(自身を含む): 148244040

約数和(自身を除く): 83928160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 39217, 78434, 156868, 196085, 313736, 392170, 784340, 1568680, 1607897, 3215794, 6431588, 8039485, 12863176, 16078970, 32157940, 64315880]

約数ペア:

[(1, 64315880), (2, 32157940), (4, 16078970), (5, 12863176), (8, 8039485), (10, 6431588), (20, 3215794), (40, 1607897), (41, 1568680), (82, 784340), (164, 392170), (205, 313736), (328, 196085), (410, 156868), (820, 78434), (1640, 39217)]