638470048

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{643619}}^1$

素因数の和:643660

約数の個数: 24

約数和(自身を含む): 1297537920

約数和(自身を除く): 659067872

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 496, 992, 643619, 1287238, 2574476, 5148952, 10297904, 19952189, 20595808, 39904378, 79808756, 159617512, 319235024, 638470048]

約数ペア:

[(1, 638470048), (2, 319235024), (4, 159617512), (8, 79808756), (16, 39904378), (31, 20595808), (32, 19952189), (62, 10297904), (124, 5148952), (248, 2574476), (496, 1287238), (992, 643619)]