28707189

素因数分解:

$3^1\times 7^2\times {\mathrm{401}}^1\times {\mathrm{487}}^1$

素因数の和:905

約数の個数: 24

約数和(自身を含む): 44728128

約数和(自身を除く): 16020939

約数列:

[1, 3, 7, 21, 49, 147, 401, 487, 1203, 1461, 2807, 3409, 8421, 10227, 19649, 23863, 58947, 71589, 195287, 585861, 1367009, 4101027, 9569063, 28707189]

約数ペア:

[(1, 28707189), (3, 9569063), (7, 4101027), (21, 1367009), (49, 585861), (147, 195287), (401, 71589), (487, 58947), (1203, 23863), (1461, 19649), (2807, 10227), (3409, 8421)]