21998542

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{13463}}^1$

素因数の和:13527

約数の個数: 16

約数和(自身を含む): 35544960

約数和(自身を除く): 13546418

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 13463, 26926, 255797, 511594, 578909, 1157818, 10999271, 21998542]

約数ペア:

[(1, 21998542), (2, 10999271), (19, 1157818), (38, 578909), (43, 511594), (86, 255797), (817, 26926), (1634, 13463)]