1991231445

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{998111}}^1$

素因数の和:998145

約数の個数: 32

約数和(自身を含む): 3832750080

約数和(自身を除く): 1841518635

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 998111, 2994333, 4990555, 6986777, 14971665, 18964109, 20960331, 34933885, 56892327, 94820545, 104801655, 132748763, 284461635, 398246289, 663743815, 1991231445]

約数ペア:

[(1, 1991231445), (3, 663743815), (5, 398246289), (7, 284461635), (15, 132748763), (19, 104801655), (21, 94820545), (35, 56892327), (57, 34933885), (95, 20960331), (105, 18964109), (133, 14971665), (285, 6986777), (399, 4990555), (665, 2994333), (1995, 998111)]