20212965

素因数分解:

$3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2861}}^1$

素因数の和:3029

約数の個数: 24

約数和(自身を含む): 35271288

約数和(自身を除く): 15058323

約数列:

[1, 3, 5, 9, 15, 45, 157, 471, 785, 1413, 2355, 2861, 7065, 8583, 14305, 25749, 42915, 128745, 449177, 1347531, 2245885, 4042593, 6737655, 20212965]

約数ペア:

[(1, 20212965), (3, 6737655), (5, 4042593), (9, 2245885), (15, 1347531), (45, 449177), (157, 128745), (471, 42915), (785, 25749), (1413, 14305), (2355, 8583), (2861, 7065)]