21239932

素因数分解:

$2^2\times 7^3\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:275

約数の個数: 48

約数和(自身を含む): 44049600

約数和(自身を除く): 22809668

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 113, 137, 196, 226, 274, 343, 452, 548, 686, 791, 959, 1372, 1582, 1918, 3164, 3836, 5537, 6713, 11074, 13426, 15481, 22148, 26852, 30962, 38759, 46991, 61924, 77518, 93982, 108367, 155036, 187964, 216734, 433468, 758569, 1517138, 3034276, 5309983, 10619966, 21239932]

約数ペア:

[(1, 21239932), (2, 10619966), (4, 5309983), (7, 3034276), (14, 1517138), (28, 758569), (49, 433468), (98, 216734), (113, 187964), (137, 155036), (196, 108367), (226, 93982), (274, 77518), (343, 61924), (452, 46991), (548, 38759), (686, 30962), (791, 26852), (959, 22148), (1372, 15481), (1582, 13426), (1918, 11074), (3164, 6713), (3836, 5537)]