21325250

素因数分解:

$2^1\times 5^3\times {\mathrm{197}}^1\times {\mathrm{433}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 40216176

約数和(自身を除く): 18890926

約数列:

[1, 2, 5, 10, 25, 50, 125, 197, 250, 394, 433, 866, 985, 1970, 2165, 4330, 4925, 9850, 10825, 21650, 24625, 49250, 54125, 85301, 108250, 170602, 426505, 853010, 2132525, 4265050, 10662625, 21325250]

約数ペア:

[(1, 21325250), (2, 10662625), (5, 4265050), (10, 2132525), (25, 853010), (50, 426505), (125, 170602), (197, 108250), (250, 85301), (394, 54125), (433, 49250), (866, 24625), (985, 21650), (1970, 10825), (2165, 9850), (4330, 4925)]