20212815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1181}}^1$

素因数の和:1359

約数の個数: 32

約数和(自身を含む): 37218816

約数和(自身を除く): 17006001

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 163, 489, 815, 1141, 1181, 2445, 3423, 3543, 5705, 5905, 8267, 17115, 17715, 24801, 41335, 124005, 192503, 577509, 962515, 1347521, 2887545, 4042563, 6737605, 20212815]

約数ペア:

[(1, 20212815), (3, 6737605), (5, 4042563), (7, 2887545), (15, 1347521), (21, 962515), (35, 577509), (105, 192503), (163, 124005), (489, 41335), (815, 24801), (1141, 17715), (1181, 17115), (2445, 8267), (3423, 5905), (3543, 5705)]