19923824

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40169}}^1$

素因数の和:40208

約数の個数: 20

約数和(自身を含む): 39848640

約数和(自身を除く): 19924816

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40169, 80338, 160676, 321352, 642704, 1245239, 2490478, 4980956, 9961912, 19923824]

約数ペア:

[(1, 19923824), (2, 9961912), (4, 4980956), (8, 2490478), (16, 1245239), (31, 642704), (62, 321352), (124, 160676), (248, 80338), (496, 40169)]