21857316

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{140111}}^1$

素因数の和:140131

約数の個数: 24

約数和(自身を含む): 54923904

約数和(自身を除く): 33066588

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 140111, 280222, 420333, 560444, 840666, 1681332, 1821443, 3642886, 5464329, 7285772, 10928658, 21857316]

約数ペア:

[(1, 21857316), (2, 10928658), (3, 7285772), (4, 5464329), (6, 3642886), (12, 1821443), (13, 1681332), (26, 840666), (39, 560444), (52, 420333), (78, 280222), (156, 140111)]