21128530

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1777}}^1$

素因数の和:1854

約数の個数: 32

約数和(自身を含む): 40325040

約数和(自身を除く): 19196510

約数列:

[1, 2, 5, 10, 29, 41, 58, 82, 145, 205, 290, 410, 1189, 1777, 2378, 3554, 5945, 8885, 11890, 17770, 51533, 72857, 103066, 145714, 257665, 364285, 515330, 728570, 2112853, 4225706, 10564265, 21128530]

約数ペア:

[(1, 21128530), (2, 10564265), (5, 4225706), (10, 2112853), (29, 728570), (41, 515330), (58, 364285), (82, 257665), (145, 145714), (205, 103066), (290, 72857), (410, 51533), (1189, 17770), (1777, 11890), (2378, 8885), (3554, 5945)]