20778645

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1291}}^1$

素因数の和:1365

約数の個数: 32

約数和(自身を含む): 35349120

約数和(自身を除く): 14570475

約数列:

[1, 3, 5, 15, 29, 37, 87, 111, 145, 185, 435, 555, 1073, 1291, 3219, 3873, 5365, 6455, 16095, 19365, 37439, 47767, 112317, 143301, 187195, 238835, 561585, 716505, 1385243, 4155729, 6926215, 20778645]

約数ペア:

[(1, 20778645), (3, 6926215), (5, 4155729), (15, 1385243), (29, 716505), (37, 561585), (87, 238835), (111, 187195), (145, 143301), (185, 112317), (435, 47767), (555, 37439), (1073, 19365), (1291, 16095), (3219, 6455), (3873, 5365)]