19959785

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:785

約数の個数: 24

約数和(自身を含む): 26819520

約数和(自身を除く): 6859735

約数列:

[1, 5, 17, 19, 85, 95, 289, 323, 727, 1445, 1615, 3635, 5491, 12359, 13813, 27455, 61795, 69065, 210103, 234821, 1050515, 1174105, 3991957, 19959785]

約数ペア:

[(1, 19959785), (5, 3991957), (17, 1174105), (19, 1050515), (85, 234821), (95, 210103), (289, 69065), (323, 61795), (727, 27455), (1445, 13813), (1615, 12359), (3635, 5491)]