19984055

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{263}}^1$

素因数の和:455

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 9820489

約数列:

[1, 5, 7, 13, 35, 65, 91, 167, 263, 455, 835, 1169, 1315, 1841, 2171, 3419, 5845, 9205, 10855, 15197, 17095, 23933, 43921, 75985, 119665, 219605, 307447, 570973, 1537235, 2854865, 3996811, 19984055]

約数ペア:

[(1, 19984055), (5, 3996811), (7, 2854865), (13, 1537235), (35, 570973), (65, 307447), (91, 219605), (167, 119665), (263, 75985), (455, 43921), (835, 23933), (1169, 17095), (1315, 15197), (1841, 10855), (2171, 9205), (3419, 5845)]