21989992

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{144671}}^1$

素因数の和:144696

約数の個数: 16

約数和(自身を含む): 43401600

約数和(自身を除く): 21411608

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 144671, 289342, 578684, 1157368, 2748749, 5497498, 10994996, 21989992]

約数ペア:

[(1, 21989992), (2, 10994996), (4, 5497498), (8, 2748749), (19, 1157368), (38, 578684), (76, 289342), (152, 144671)]