21689776

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{20233}}^1$

素因数の和:20308

約数の個数: 20

約数和(自身を含む): 42653272

約数和(自身を除く): 20963496

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 20233, 40466, 80932, 161864, 323728, 1355611, 2711222, 5422444, 10844888, 21689776]

約数ペア:

[(1, 21689776), (2, 10844888), (4, 5422444), (8, 2711222), (16, 1355611), (67, 323728), (134, 161864), (268, 80932), (536, 40466), (1072, 20233)]