21406630

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{79}}^2$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 45511200

約数和(自身を除く): 24104570

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 79, 98, 158, 245, 343, 395, 490, 553, 686, 790, 1106, 1715, 2765, 3430, 3871, 5530, 6241, 7742, 12482, 19355, 27097, 31205, 38710, 43687, 54194, 62410, 87374, 135485, 218435, 270970, 305809, 436870, 611618, 1529045, 2140663, 3058090, 4281326, 10703315, 21406630]

約数ペア:

[(1, 21406630), (2, 10703315), (5, 4281326), (7, 3058090), (10, 2140663), (14, 1529045), (35, 611618), (49, 436870), (70, 305809), (79, 270970), (98, 218435), (158, 135485), (245, 87374), (343, 62410), (395, 54194), (490, 43687), (553, 38710), (686, 31205), (790, 27097), (1106, 19355), (1715, 12482), (2765, 7742), (3430, 6241), (3871, 5530)]