21242270

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{4157}}^1$

素因数の和:4244

約数の個数: 32

約数和(自身を含む): 44307648

約数和(自身を除く): 23065378

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 73, 146, 365, 511, 730, 1022, 2555, 4157, 5110, 8314, 20785, 29099, 41570, 58198, 145495, 290990, 303461, 606922, 1517305, 2124227, 3034610, 4248454, 10621135, 21242270]

約数ペア:

[(1, 21242270), (2, 10621135), (5, 4248454), (7, 3034610), (10, 2124227), (14, 1517305), (35, 606922), (70, 303461), (73, 290990), (146, 145495), (365, 58198), (511, 41570), (730, 29099), (1022, 20785), (2555, 8314), (4157, 5110)]