21203620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{55799}}^1$

素因数の和:55827

約数の個数: 24

約数和(自身を含む): 46872000

約数和(自身を除く): 25668380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 55799, 111598, 223196, 278995, 557990, 1060181, 1115980, 2120362, 4240724, 5300905, 10601810, 21203620]

約数ペア:

[(1, 21203620), (2, 10601810), (4, 5300905), (5, 4240724), (10, 2120362), (19, 1115980), (20, 1060181), (38, 557990), (76, 278995), (95, 223196), (190, 111598), (380, 55799)]