21319506

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2939}}^1$

素因数の和:2991

約数の個数: 48

約数和(自身を含む): 51367680

約数和(自身を除く): 30048174

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 31, 39, 62, 78, 93, 117, 186, 234, 279, 403, 558, 806, 1209, 2418, 2939, 3627, 5878, 7254, 8817, 17634, 26451, 38207, 52902, 76414, 91109, 114621, 182218, 229242, 273327, 343863, 546654, 687726, 819981, 1184417, 1639962, 2368834, 3553251, 7106502, 10659753, 21319506]

約数ペア:

[(1, 21319506), (2, 10659753), (3, 7106502), (6, 3553251), (9, 2368834), (13, 1639962), (18, 1184417), (26, 819981), (31, 687726), (39, 546654), (62, 343863), (78, 273327), (93, 229242), (117, 182218), (186, 114621), (234, 91109), (279, 76414), (403, 52902), (558, 38207), (806, 26451), (1209, 17634), (2418, 8817), (2939, 7254), (3627, 5878)]