20343856

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2081}}^1$

素因数の和:2149

約数の個数: 40

約数和(自身を含む): 43372224

約数和(自身を除く): 23028368

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 188, 208, 376, 611, 752, 1222, 2081, 2444, 4162, 4888, 8324, 9776, 16648, 27053, 33296, 54106, 97807, 108212, 195614, 216424, 391228, 432848, 782456, 1271491, 1564912, 2542982, 5085964, 10171928, 20343856]

約数ペア:

[(1, 20343856), (2, 10171928), (4, 5085964), (8, 2542982), (13, 1564912), (16, 1271491), (26, 782456), (47, 432848), (52, 391228), (94, 216424), (104, 195614), (188, 108212), (208, 97807), (376, 54106), (611, 33296), (752, 27053), (1222, 16648), (2081, 9776), (2444, 8324), (4162, 4888)]