21873028

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{277}}^1\times {\mathrm{1039}}^1$

素因数の和:1339

約数の個数: 24

約数和(自身を含む): 40476800

約数和(自身を除く): 18603772

約数列:

[1, 2, 4, 19, 38, 76, 277, 554, 1039, 1108, 2078, 4156, 5263, 10526, 19741, 21052, 39482, 78964, 287803, 575606, 1151212, 5468257, 10936514, 21873028]

約数ペア:

[(1, 21873028), (2, 10936514), (4, 5468257), (19, 1151212), (38, 575606), (76, 287803), (277, 78964), (554, 39482), (1039, 21052), (1108, 19741), (2078, 10526), (4156, 5263)]