28377940

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{5521}}^1$

素因数の和:5787

約数の個数: 24

約数和(自身を含む): 59836392

約数和(自身を除く): 31458452

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 5521, 11042, 22084, 27605, 55210, 110420, 1418897, 2837794, 5675588, 7094485, 14188970, 28377940]

約数ペア:

[(1, 28377940), (2, 14188970), (4, 7094485), (5, 5675588), (10, 2837794), (20, 1418897), (257, 110420), (514, 55210), (1028, 27605), (1285, 22084), (2570, 11042), (5140, 5521)]