20439020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2179}}^1$

素因数の和:2262

約数の個数: 48

約数和(自身を含む): 49808640

約数和(自身を除く): 29369620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2179, 2345, 4358, 4690, 8716, 9380, 10895, 15253, 21790, 30506, 43580, 61012, 76265, 145993, 152530, 291986, 305060, 583972, 729965, 1021951, 1459930, 2043902, 2919860, 4087804, 5109755, 10219510, 20439020]

約数ペア:

[(1, 20439020), (2, 10219510), (4, 5109755), (5, 4087804), (7, 2919860), (10, 2043902), (14, 1459930), (20, 1021951), (28, 729965), (35, 583972), (67, 305060), (70, 291986), (134, 152530), (140, 145993), (268, 76265), (335, 61012), (469, 43580), (670, 30506), (938, 21790), (1340, 15253), (1876, 10895), (2179, 9380), (2345, 8716), (4358, 4690)]