21407655

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^2\times {\mathrm{1697}}^1$

素因数の和:1763

約数の個数: 24

約数和(自身を含む): 35494992

約数和(自身を除く): 14087337

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 841, 1697, 2523, 4205, 5091, 8485, 12615, 25455, 49213, 147639, 246065, 738195, 1427177, 4281531, 7135885, 21407655]

約数ペア:

[(1, 21407655), (3, 7135885), (5, 4281531), (15, 1427177), (29, 738195), (87, 246065), (145, 147639), (435, 49213), (841, 25455), (1697, 12615), (2523, 8485), (4205, 5091)]