21137804

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{7517}}^1$

素因数の和:7577

約数の個数: 24

約数和(自身を含む): 39995760

約数和(自身を除く): 18857956

約数列:

[1, 2, 4, 19, 37, 38, 74, 76, 148, 703, 1406, 2812, 7517, 15034, 30068, 142823, 278129, 285646, 556258, 571292, 1112516, 5284451, 10568902, 21137804]

約数ペア:

[(1, 21137804), (2, 10568902), (4, 5284451), (19, 1112516), (37, 571292), (38, 556258), (74, 285646), (76, 278129), (148, 142823), (703, 30068), (1406, 15034), (2812, 7517)]