20646395

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 32306688

約数和(自身を除く): 11660293

約数列:

[1, 5, 7, 11, 35, 47, 49, 55, 77, 163, 235, 245, 329, 385, 517, 539, 815, 1141, 1645, 1793, 2303, 2585, 2695, 3619, 5705, 7661, 7987, 8965, 11515, 12551, 18095, 25333, 38305, 39935, 53627, 62755, 84271, 87857, 126665, 268135, 375389, 421355, 439285, 589897, 1876945, 2949485, 4129279, 20646395]

約数ペア:

[(1, 20646395), (5, 4129279), (7, 2949485), (11, 1876945), (35, 589897), (47, 439285), (49, 421355), (55, 375389), (77, 268135), (163, 126665), (235, 87857), (245, 84271), (329, 62755), (385, 53627), (517, 39935), (539, 38305), (815, 25333), (1141, 18095), (1645, 12551), (1793, 11515), (2303, 8965), (2585, 7987), (2695, 7661), (3619, 5705)]