31990915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 44789760

約数和(自身を除く): 12798845

約数列:

[1, 5, 11, 29, 31, 55, 145, 155, 319, 341, 647, 899, 1595, 1705, 3235, 4495, 7117, 9889, 18763, 20057, 35585, 49445, 93815, 100285, 206393, 220627, 581653, 1031965, 1103135, 2908265, 6398183, 31990915]

約数ペア:

[(1, 31990915), (5, 6398183), (11, 2908265), (29, 1103135), (31, 1031965), (55, 581653), (145, 220627), (155, 206393), (319, 100285), (341, 93815), (647, 49445), (899, 35585), (1595, 20057), (1705, 18763), (3235, 9889), (4495, 7117)]