21971511

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{83}}^1\times {\mathrm{439}}^1$

素因数の和:595

約数の個数: 24

約数和(自身を含む): 32672640

約数和(自身を除く): 10701129

約数列:

[1, 3, 9, 67, 83, 201, 249, 439, 603, 747, 1317, 3951, 5561, 16683, 29413, 36437, 50049, 88239, 109311, 264717, 327933, 2441279, 7323837, 21971511]

約数ペア:

[(1, 21971511), (3, 7323837), (9, 2441279), (67, 327933), (83, 264717), (201, 109311), (249, 88239), (439, 50049), (603, 36437), (747, 29413), (1317, 16683), (3951, 5561)]