19901388

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{661}}^1$

素因数の和:874

約数の個数: 48

約数和(自身を含む): 50343776

約数和(自身を除く): 30442388

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 193, 386, 579, 661, 772, 1158, 1322, 1983, 2316, 2509, 2644, 3966, 5018, 7527, 7932, 8593, 10036, 15054, 17186, 25779, 30108, 34372, 51558, 103116, 127573, 255146, 382719, 510292, 765438, 1530876, 1658449, 3316898, 4975347, 6633796, 9950694, 19901388]

約数ペア:

[(1, 19901388), (2, 9950694), (3, 6633796), (4, 4975347), (6, 3316898), (12, 1658449), (13, 1530876), (26, 765438), (39, 510292), (52, 382719), (78, 255146), (156, 127573), (193, 103116), (386, 51558), (579, 34372), (661, 30108), (772, 25779), (1158, 17186), (1322, 15054), (1983, 10036), (2316, 8593), (2509, 7932), (2644, 7527), (3966, 5018)]