291267440

素因数分解:

$2^4\times 5^1\times {\mathrm{3640843}}^1$

素因数の和:3640856

約数の個数: 20

約数和(自身を含む): 677196984

約数和(自身を除く): 385929544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3640843, 7281686, 14563372, 18204215, 29126744, 36408430, 58253488, 72816860, 145633720, 291267440]

約数ペア:

[(1, 291267440), (2, 145633720), (4, 72816860), (5, 58253488), (8, 36408430), (10, 29126744), (16, 18204215), (20, 14563372), (40, 7281686), (80, 3640843)]