19863711

素因数分解:

$3^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{661}}^1$

素因数の和:733

約数の個数: 40

約数和(自身を含む): 34604064

約数和(自身を除く): 14740353

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 81, 159, 189, 371, 477, 567, 661, 1113, 1431, 1983, 3339, 4293, 4627, 5949, 10017, 13881, 17847, 30051, 35033, 41643, 53541, 105099, 124929, 245231, 315297, 374787, 735693, 945891, 2207079, 2837673, 6621237, 19863711]

約数ペア:

[(1, 19863711), (3, 6621237), (7, 2837673), (9, 2207079), (21, 945891), (27, 735693), (53, 374787), (63, 315297), (81, 245231), (159, 124929), (189, 105099), (371, 53541), (477, 41643), (567, 35033), (661, 30051), (1113, 17847), (1431, 13881), (1983, 10017), (3339, 5949), (4293, 4627)]