21377584

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70321}}^1$

素因数の和:70348

約数の個数: 20

約数和(自身を含む): 43599640

約数和(自身を除く): 22222056

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70321, 140642, 281284, 562568, 1125136, 1336099, 2672198, 5344396, 10688792, 21377584]

約数ペア:

[(1, 21377584), (2, 10688792), (4, 5344396), (8, 2672198), (16, 1336099), (19, 1125136), (38, 562568), (76, 281284), (152, 140642), (304, 70321)]