21855610

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 47215872

約数和(自身を除く): 25360262

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 53, 70, 86, 106, 137, 215, 265, 274, 301, 371, 430, 530, 602, 685, 742, 959, 1370, 1505, 1855, 1918, 2279, 3010, 3710, 4558, 4795, 5891, 7261, 9590, 11395, 11782, 14522, 15953, 22790, 29455, 31906, 36305, 41237, 50827, 58910, 72610, 79765, 82474, 101654, 159530, 206185, 254135, 312223, 412370, 508270, 624446, 1561115, 2185561, 3122230, 4371122, 10927805, 21855610]

約数ペア:

[(1, 21855610), (2, 10927805), (5, 4371122), (7, 3122230), (10, 2185561), (14, 1561115), (35, 624446), (43, 508270), (53, 412370), (70, 312223), (86, 254135), (106, 206185), (137, 159530), (215, 101654), (265, 82474), (274, 79765), (301, 72610), (371, 58910), (430, 50827), (530, 41237), (602, 36305), (685, 31906), (742, 29455), (959, 22790), (1370, 15953), (1505, 14522), (1855, 11782), (1918, 11395), (2279, 9590), (3010, 7261), (3710, 5891), (4558, 4795)]