20281936

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{397}}^1$

素因数の和:539

約数の個数: 40

約数和(自身を含む): 41060864

約数和(自身を除く): 20778928

約数列:

[1, 2, 4, 8, 16, 31, 62, 103, 124, 206, 248, 397, 412, 496, 794, 824, 1588, 1648, 3176, 3193, 6352, 6386, 12307, 12772, 24614, 25544, 40891, 49228, 51088, 81782, 98456, 163564, 196912, 327128, 654256, 1267621, 2535242, 5070484, 10140968, 20281936]

約数ペア:

[(1, 20281936), (2, 10140968), (4, 5070484), (8, 2535242), (16, 1267621), (31, 654256), (62, 327128), (103, 196912), (124, 163564), (206, 98456), (248, 81782), (397, 51088), (412, 49228), (496, 40891), (794, 25544), (824, 24614), (1588, 12772), (1648, 12307), (3176, 6386), (3193, 6352)]