21658408

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2243}}^1$

素因数の和:2337

約数の個数: 32

約数和(自身を含む): 43623360

約数和(自身を除く): 21964952

約数列:

[1, 2, 4, 8, 17, 34, 68, 71, 136, 142, 284, 568, 1207, 2243, 2414, 4486, 4828, 8972, 9656, 17944, 38131, 76262, 152524, 159253, 305048, 318506, 637012, 1274024, 2707301, 5414602, 10829204, 21658408]

約数ペア:

[(1, 21658408), (2, 10829204), (4, 5414602), (8, 2707301), (17, 1274024), (34, 637012), (68, 318506), (71, 305048), (136, 159253), (142, 152524), (284, 76262), (568, 38131), (1207, 17944), (2243, 9656), (2414, 8972), (4486, 4828)]