161617880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{130337}}^1$

素因数の和:130379

約数の個数: 32

約数和(自身を含む): 375373440

約数和(自身を除く): 213755560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 130337, 260674, 521348, 651685, 1042696, 1303370, 2606740, 4040447, 5213480, 8080894, 16161788, 20202235, 32323576, 40404470, 80808940, 161617880]

約数ペア:

[(1, 161617880), (2, 80808940), (4, 40404470), (5, 32323576), (8, 20202235), (10, 16161788), (20, 8080894), (31, 5213480), (40, 4040447), (62, 2606740), (124, 1303370), (155, 1042696), (248, 651685), (310, 521348), (620, 260674), (1240, 130337)]