78927778

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{3251}}^1$

素因数の和:3513

約数の個数: 16

約数和(自身を含む): 120974400

約数和(自身を除く): 42046622

約数列:

[1, 2, 61, 122, 199, 398, 3251, 6502, 12139, 24278, 198311, 396622, 646949, 1293898, 39463889, 78927778]

約数ペア:

[(1, 78927778), (2, 39463889), (61, 1293898), (122, 646949), (199, 396622), (398, 198311), (3251, 24278), (6502, 12139)]