21124370

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{313}}^1\times {\mathrm{397}}^1$

素因数の和:734

約数の個数: 32

約数和(自身を含む): 40490928

約数和(自身を除く): 19366558

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 313, 397, 626, 794, 1565, 1985, 3130, 3970, 5321, 6749, 10642, 13498, 26605, 33745, 53210, 67490, 124261, 248522, 621305, 1242610, 2112437, 4224874, 10562185, 21124370]

約数ペア:

[(1, 21124370), (2, 10562185), (5, 4224874), (10, 2112437), (17, 1242610), (34, 621305), (85, 248522), (170, 124261), (313, 67490), (397, 53210), (626, 33745), (794, 26605), (1565, 13498), (1985, 10642), (3130, 6749), (3970, 5321)]