290435620

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{216743}}^1$

素因数の和:216819

約数の個数: 24

約数和(自身を含む): 619020864

約数和(自身を除く): 328585244

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 216743, 433486, 866972, 1083715, 2167430, 4334860, 14521781, 29043562, 58087124, 72608905, 145217810, 290435620]

約数ペア:

[(1, 290435620), (2, 145217810), (4, 72608905), (5, 58087124), (10, 29043562), (20, 14521781), (67, 4334860), (134, 2167430), (268, 1083715), (335, 866972), (670, 433486), (1340, 216743)]