19510780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{31469}}^1$

素因数の和:31509

約数の個数: 24

約数和(自身を含む): 42295680

約数和(自身を除く): 22784900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 31469, 62938, 125876, 157345, 314690, 629380, 975539, 1951078, 3902156, 4877695, 9755390, 19510780]

約数ペア:

[(1, 19510780), (2, 9755390), (4, 4877695), (5, 3902156), (10, 1951078), (20, 975539), (31, 629380), (62, 314690), (124, 157345), (155, 125876), (310, 62938), (620, 31469)]