20957145

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{809}}^1$

素因数の和:985

約数の個数: 32

約数和(自身を含む): 36858240

約数和(自身を除く): 15901095

約数列:

[1, 3, 5, 11, 15, 33, 55, 157, 165, 471, 785, 809, 1727, 2355, 2427, 4045, 5181, 8635, 8899, 12135, 25905, 26697, 44495, 127013, 133485, 381039, 635065, 1397143, 1905195, 4191429, 6985715, 20957145]

約数ペア:

[(1, 20957145), (3, 6985715), (5, 4191429), (11, 1905195), (15, 1397143), (33, 635065), (55, 381039), (157, 133485), (165, 127013), (471, 44495), (785, 26697), (809, 25905), (1727, 12135), (2355, 8899), (2427, 8635), (4045, 5181)]