21132190

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{631}}^1$

素因数の和:852

約数の個数: 32

約数和(自身を含む): 40544064

約数和(自身を除く): 19411874

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 197, 394, 631, 985, 1262, 1970, 3155, 3349, 6310, 6698, 10727, 16745, 21454, 33490, 53635, 107270, 124307, 248614, 621535, 1243070, 2113219, 4226438, 10566095, 21132190]

約数ペア:

[(1, 21132190), (2, 10566095), (5, 4226438), (10, 2113219), (17, 1243070), (34, 621535), (85, 248614), (170, 124307), (197, 107270), (394, 53635), (631, 33490), (985, 21454), (1262, 16745), (1970, 10727), (3155, 6698), (3349, 6310)]