217121488

素因数分解:

$2^4\times {\mathrm{421}}^1\times {\mathrm{32233}}^1$

素因数の和:32662

約数の個数: 20

約数和(自身を含む): 421685188

約数和(自身を除く): 204563700

約数列:

[1, 2, 4, 8, 16, 421, 842, 1684, 3368, 6736, 32233, 64466, 128932, 257864, 515728, 13570093, 27140186, 54280372, 108560744, 217121488]

約数ペア:

[(1, 217121488), (2, 108560744), (4, 54280372), (8, 27140186), (16, 13570093), (421, 515728), (842, 257864), (1684, 128932), (3368, 64466), (6736, 32233)]