19965055

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:327

約数の個数: 32

約数和(自身を含む): 28055808

約数和(自身を除く): 8090753

約数列:

[1, 5, 11, 17, 55, 85, 131, 163, 187, 655, 815, 935, 1441, 1793, 2227, 2771, 7205, 8965, 11135, 13855, 21353, 24497, 30481, 106765, 122485, 152405, 234883, 363001, 1174415, 1815005, 3993011, 19965055]

約数ペア:

[(1, 19965055), (5, 3993011), (11, 1815005), (17, 1174415), (55, 363001), (85, 234883), (131, 152405), (163, 122485), (187, 106765), (655, 30481), (815, 24497), (935, 21353), (1441, 13855), (1793, 11135), (2227, 8965), (2771, 7205)]