28782100

素因数分解:

$2^2\times 5^2\times {\mathrm{287821}}^1$

素因数の和:287835

約数の個数: 18

約数和(自身を含む): 62457374

約数和(自身を除く): 33675274

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 287821, 575642, 1151284, 1439105, 2878210, 5756420, 7195525, 14391050, 28782100]

約数ペア:

[(1, 28782100), (2, 14391050), (4, 7195525), (5, 5756420), (10, 2878210), (20, 1439105), (25, 1151284), (50, 575642), (100, 287821)]