900297880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{2657}}^1$

素因数の和:2908

約数の個数: 64

約数和(自身を含む): 2084084640

約数和(自身を除く): 1183786760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 197, 215, 344, 394, 430, 788, 860, 985, 1576, 1720, 1970, 2657, 3940, 5314, 7880, 8471, 10628, 13285, 16942, 21256, 26570, 33884, 42355, 53140, 67768, 84710, 106280, 114251, 169420, 228502, 338840, 457004, 523429, 571255, 914008, 1046858, 1142510, 2093716, 2285020, 2617145, 4187432, 4570040, 5234290, 10468580, 20937160, 22507447, 45014894, 90029788, 112537235, 180059576, 225074470, 450148940, 900297880]

約数ペア:

[(1, 900297880), (2, 450148940), (4, 225074470), (5, 180059576), (8, 112537235), (10, 90029788), (20, 45014894), (40, 22507447), (43, 20937160), (86, 10468580), (172, 5234290), (197, 4570040), (215, 4187432), (344, 2617145), (394, 2285020), (430, 2093716), (788, 1142510), (860, 1046858), (985, 914008), (1576, 571255), (1720, 523429), (1970, 457004), (2657, 338840), (3940, 228502), (5314, 169420), (7880, 114251), (8471, 106280), (10628, 84710), (13285, 67768), (16942, 53140), (21256, 42355), (26570, 33884)]