21200528

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42743}}^1$

素因数の和:42782

約数の個数: 20

約数和(自身を含む): 42402048

約数和(自身を除く): 21201520

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42743, 85486, 170972, 341944, 683888, 1325033, 2650066, 5300132, 10600264, 21200528]

約数ペア:

[(1, 21200528), (2, 10600264), (4, 5300132), (8, 2650066), (16, 1325033), (31, 683888), (62, 341944), (124, 170972), (248, 85486), (496, 42743)]