18861968

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{28753}}^1$

素因数の和:28802

約数の個数: 20

約数和(自身を含む): 37437708

約数和(自身を除く): 18575740

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 28753, 57506, 115012, 230024, 460048, 1178873, 2357746, 4715492, 9430984, 18861968]

約数ペア:

[(1, 18861968), (2, 9430984), (4, 4715492), (8, 2357746), (16, 1178873), (41, 460048), (82, 230024), (164, 115012), (328, 57506), (656, 28753)]