67720420

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{72043}}^1$

素因数の和:72099

約数の個数: 24

約数和(自身を含む): 145240704

約数和(自身を除く): 77520284

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 72043, 144086, 288172, 360215, 720430, 1440860, 3386021, 6772042, 13544084, 16930105, 33860210, 67720420]

約数ペア:

[(1, 67720420), (2, 33860210), (4, 16930105), (5, 13544084), (10, 6772042), (20, 3386021), (47, 1440860), (94, 720430), (188, 360215), (235, 288172), (470, 144086), (940, 72043)]