21698480

素因数分解:

$2^4\times 5^1\times {\mathrm{271231}}^1$

素因数の和:271244

約数の個数: 20

約数和(自身を含む): 50449152

約数和(自身を除く): 28750672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271231, 542462, 1084924, 1356155, 2169848, 2712310, 4339696, 5424620, 10849240, 21698480]

約数ペア:

[(1, 21698480), (2, 10849240), (4, 5424620), (5, 4339696), (8, 2712310), (10, 2169848), (16, 1356155), (20, 1084924), (40, 542462), (80, 271231)]