25403380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{66851}}^1$

素因数の和:66879

約数の個数: 24

約数和(自身を含む): 56155680

約数和(自身を除く): 30752300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 66851, 133702, 267404, 334255, 668510, 1270169, 1337020, 2540338, 5080676, 6350845, 12701690, 25403380]

約数ペア:

[(1, 25403380), (2, 12701690), (4, 6350845), (5, 5080676), (10, 2540338), (19, 1337020), (20, 1270169), (38, 668510), (76, 334255), (95, 267404), (190, 133702), (380, 66851)]