21124545

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{853}}^1$

素因数の和:1001

約数の個数: 32

約数和(自身を含む): 36728832

約数和(自身を除く): 15604287

約数列:

[1, 3, 5, 13, 15, 39, 65, 127, 195, 381, 635, 853, 1651, 1905, 2559, 4265, 4953, 8255, 11089, 12795, 24765, 33267, 55445, 108331, 166335, 324993, 541655, 1408303, 1624965, 4224909, 7041515, 21124545]

約数ペア:

[(1, 21124545), (3, 7041515), (5, 4224909), (13, 1624965), (15, 1408303), (39, 541655), (65, 324993), (127, 166335), (195, 108331), (381, 55445), (635, 33267), (853, 24765), (1651, 12795), (1905, 11089), (2559, 8255), (4265, 4953)]