20010128

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40343}}^1$

素因数の和:40382

約数の個数: 20

約数和(自身を含む): 40021248

約数和(自身を除く): 20011120

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40343, 80686, 161372, 322744, 645488, 1250633, 2501266, 5002532, 10005064, 20010128]

約数ペア:

[(1, 20010128), (2, 10005064), (4, 5002532), (8, 2501266), (16, 1250633), (31, 645488), (62, 322744), (124, 161372), (248, 80686), (496, 40343)]