21495920

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5717}}^1$

素因数の和:5777

約数の個数: 40

約数和(自身を含む): 51050304

約数和(自身を除く): 29554384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5717, 11434, 22868, 28585, 45736, 57170, 91472, 114340, 228680, 268699, 457360, 537398, 1074796, 1343495, 2149592, 2686990, 4299184, 5373980, 10747960, 21495920]

約数ペア:

[(1, 21495920), (2, 10747960), (4, 5373980), (5, 4299184), (8, 2686990), (10, 2149592), (16, 1343495), (20, 1074796), (40, 537398), (47, 457360), (80, 268699), (94, 228680), (188, 114340), (235, 91472), (376, 57170), (470, 45736), (752, 28585), (940, 22868), (1880, 11434), (3760, 5717)]