18975620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{317}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 41510448

約数和(自身を除く): 22534828

約数列:

[1, 2, 4, 5, 10, 20, 41, 73, 82, 146, 164, 205, 292, 317, 365, 410, 634, 730, 820, 1268, 1460, 1585, 2993, 3170, 5986, 6340, 11972, 12997, 14965, 23141, 25994, 29930, 46282, 51988, 59860, 64985, 92564, 115705, 129970, 231410, 259940, 462820, 948781, 1897562, 3795124, 4743905, 9487810, 18975620]

約数ペア:

[(1, 18975620), (2, 9487810), (4, 4743905), (5, 3795124), (10, 1897562), (20, 948781), (41, 462820), (73, 259940), (82, 231410), (146, 129970), (164, 115705), (205, 92564), (292, 64985), (317, 59860), (365, 51988), (410, 46282), (634, 29930), (730, 25994), (820, 23141), (1268, 14965), (1460, 12997), (1585, 11972), (2993, 6340), (3170, 5986)]