21374265

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{461}}^1$

素因数の和:761

約数の個数: 32

約数和(自身を含む): 37521792

約数和(自身を除く): 16147527

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 281, 461, 843, 1383, 1405, 2305, 3091, 4215, 5071, 6915, 9273, 15213, 15455, 25355, 46365, 76065, 129541, 388623, 647705, 1424951, 1943115, 4274853, 7124755, 21374265]

約数ペア:

[(1, 21374265), (3, 7124755), (5, 4274853), (11, 1943115), (15, 1424951), (33, 647705), (55, 388623), (165, 129541), (281, 76065), (461, 46365), (843, 25355), (1383, 15455), (1405, 15213), (2305, 9273), (3091, 6915), (4215, 5071)]