19917205

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{4703}}^1$

素因数の和:4737

約数の個数: 24

約数和(自身を含む): 30030336

約数和(自身を除く): 10113131

約数列:

[1, 5, 7, 11, 35, 55, 77, 121, 385, 605, 847, 4235, 4703, 23515, 32921, 51733, 164605, 258665, 362131, 569063, 1810655, 2845315, 3983441, 19917205]

約数ペア:

[(1, 19917205), (5, 3983441), (7, 2845315), (11, 1810655), (35, 569063), (55, 362131), (77, 258665), (121, 164605), (385, 51733), (605, 32921), (847, 23515), (4235, 4703)]