21184222880

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1675967}}^1$

素因数の和:1676061

約数の個数: 48

約数和(自身を含む): 50681272320

約数和(自身を除く): 29497049440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 632, 790, 1264, 1580, 2528, 3160, 6320, 12640, 1675967, 3351934, 6703868, 8379835, 13407736, 16759670, 26815472, 33519340, 53630944, 67038680, 132401393, 134077360, 264802786, 268154720, 529605572, 662006965, 1059211144, 1324013930, 2118422288, 2648027860, 4236844576, 5296055720, 10592111440, 21184222880]

約数ペア:

[(1, 21184222880), (2, 10592111440), (4, 5296055720), (5, 4236844576), (8, 2648027860), (10, 2118422288), (16, 1324013930), (20, 1059211144), (32, 662006965), (40, 529605572), (79, 268154720), (80, 264802786), (158, 134077360), (160, 132401393), (316, 67038680), (395, 53630944), (632, 33519340), (790, 26815472), (1264, 16759670), (1580, 13407736), (2528, 8379835), (3160, 6703868), (6320, 3351934), (12640, 1675967)]