21284848

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3301}}^1$

素因数の和:3353

約数の個数: 40

約数和(自身を含む): 45858176

約数和(自身を除く): 24573328

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 3301, 6448, 6602, 13204, 26408, 42913, 52816, 85826, 102331, 171652, 204662, 343304, 409324, 686608, 818648, 1330303, 1637296, 2660606, 5321212, 10642424, 21284848]

約数ペア:

[(1, 21284848), (2, 10642424), (4, 5321212), (8, 2660606), (13, 1637296), (16, 1330303), (26, 818648), (31, 686608), (52, 409324), (62, 343304), (104, 204662), (124, 171652), (208, 102331), (248, 85826), (403, 52816), (496, 42913), (806, 26408), (1612, 13204), (3224, 6602), (3301, 6448)]