639842330

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1\times {\mathrm{1933}}^1$

素因数の和:2438

約数の個数: 32

約数和(自身を含む): 1169683200

約数和(自身を除く): 529840870

約数列:

[1, 2, 5, 10, 79, 158, 395, 419, 790, 838, 1933, 2095, 3866, 4190, 9665, 19330, 33101, 66202, 152707, 165505, 305414, 331010, 763535, 809927, 1527070, 1619854, 4049635, 8099270, 63984233, 127968466, 319921165, 639842330]

約数ペア:

[(1, 639842330), (2, 319921165), (5, 127968466), (10, 63984233), (79, 8099270), (158, 4049635), (395, 1619854), (419, 1527070), (790, 809927), (838, 763535), (1933, 331010), (2095, 305414), (3866, 165505), (4190, 152707), (9665, 66202), (19330, 33101)]