21417237

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{503}}^1$

素因数の和:614

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12451563

約数列:

[1, 3, 9, 19, 27, 57, 83, 171, 249, 503, 513, 747, 1509, 1577, 2241, 4527, 4731, 9557, 13581, 14193, 28671, 41749, 42579, 86013, 125247, 258039, 375741, 793231, 1127223, 2379693, 7139079, 21417237]

約数ペア:

[(1, 21417237), (3, 7139079), (9, 2379693), (19, 1127223), (27, 793231), (57, 375741), (83, 258039), (171, 125247), (249, 86013), (503, 42579), (513, 41749), (747, 28671), (1509, 14193), (1577, 13581), (2241, 9557), (4527, 4731)]