797871280

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{91499}}^1$

素因数の和:91621

約数の個数: 40

約数和(自身を含む): 1872090000

約数和(自身を除く): 1074218720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 91499, 182998, 365996, 457495, 731992, 914990, 1463984, 1829980, 3659960, 7319920, 9973391, 19946782, 39893564, 49866955, 79787128, 99733910, 159574256, 199467820, 398935640, 797871280]

約数ペア:

[(1, 797871280), (2, 398935640), (4, 199467820), (5, 159574256), (8, 99733910), (10, 79787128), (16, 49866955), (20, 39893564), (40, 19946782), (80, 9973391), (109, 7319920), (218, 3659960), (436, 1829980), (545, 1463984), (872, 914990), (1090, 731992), (1744, 457495), (2180, 365996), (4360, 182998), (8720, 91499)]