19778762

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{727}}^1$

素因数の和:1013

約数の個数: 16

約数和(自身を含む): 30331392

約数和(自身を除く): 10552630

約数列:

[1, 2, 61, 122, 223, 446, 727, 1454, 13603, 27206, 44347, 88694, 162121, 324242, 9889381, 19778762]

約数ペア:

[(1, 19778762), (2, 9889381), (61, 324242), (122, 162121), (223, 88694), (446, 44347), (727, 27206), (1454, 13603)]