20942032

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:611

約数の個数: 40

約数和(自身を含む): 42284000

約数和(自身を除く): 21341968

約数列:

[1, 2, 4, 8, 16, 43, 61, 86, 122, 172, 244, 344, 488, 499, 688, 976, 998, 1996, 2623, 3992, 5246, 7984, 10492, 20984, 21457, 30439, 41968, 42914, 60878, 85828, 121756, 171656, 243512, 343312, 487024, 1308877, 2617754, 5235508, 10471016, 20942032]

約数ペア:

[(1, 20942032), (2, 10471016), (4, 5235508), (8, 2617754), (16, 1308877), (43, 487024), (61, 343312), (86, 243512), (122, 171656), (172, 121756), (244, 85828), (344, 60878), (488, 42914), (499, 41968), (688, 30439), (976, 21457), (998, 20984), (1996, 10492), (2623, 7984), (3992, 5246)]