21756495

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 36115200

約数和(自身を除く): 14358705

約数列:

[1, 3, 5, 15, 43, 89, 129, 215, 267, 379, 445, 645, 1137, 1335, 1895, 3827, 5685, 11481, 16297, 19135, 33731, 48891, 57405, 81485, 101193, 168655, 244455, 505965, 1450433, 4351299, 7252165, 21756495]

約数ペア:

[(1, 21756495), (3, 7252165), (5, 4351299), (15, 1450433), (43, 505965), (89, 244455), (129, 168655), (215, 101193), (267, 81485), (379, 57405), (445, 48891), (645, 33731), (1137, 19135), (1335, 16297), (1895, 11481), (3827, 5685)]