20131228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8237}}^1$

素因数の和:8301

約数の個数: 24

約数和(自身を含む): 38751552

約数和(自身を除く): 18620324

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 188, 611, 1222, 2444, 8237, 16474, 32948, 107081, 214162, 387139, 428324, 774278, 1548556, 5032807, 10065614, 20131228]

約数ペア:

[(1, 20131228), (2, 10065614), (4, 5032807), (13, 1548556), (26, 774278), (47, 428324), (52, 387139), (94, 214162), (188, 107081), (611, 32948), (1222, 16474), (2444, 8237)]