19965087175

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{72600317}}^1$

素因数の和:72600338

約数の個数: 12

約数和(自身を含む): 27007318296

約数和(自身を除く): 7042231121

約数列:

[1, 5, 11, 25, 55, 275, 72600317, 363001585, 798603487, 1815007925, 3993017435, 19965087175]

約数ペア:

[(1, 19965087175), (5, 3993017435), (11, 1815007925), (25, 798603487), (55, 363001585), (275, 72600317)]