21799270

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{397}}^1$

素因数の和:457

約数の個数: 48

約数和(自身を含む): 43986960

約数和(自身を除く): 22187690

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 85, 95, 170, 190, 289, 323, 397, 578, 646, 794, 1445, 1615, 1985, 2890, 3230, 3970, 5491, 6749, 7543, 10982, 13498, 15086, 27455, 33745, 37715, 54910, 67490, 75430, 114733, 128231, 229466, 256462, 573665, 641155, 1147330, 1282310, 2179927, 4359854, 10899635, 21799270]

約数ペア:

[(1, 21799270), (2, 10899635), (5, 4359854), (10, 2179927), (17, 1282310), (19, 1147330), (34, 641155), (38, 573665), (85, 256462), (95, 229466), (170, 128231), (190, 114733), (289, 75430), (323, 67490), (397, 54910), (578, 37715), (646, 33745), (794, 27455), (1445, 15086), (1615, 13498), (1985, 10982), (2890, 7543), (3230, 6749), (3970, 5491)]