20921748

素因数分解:

$2^2\times 3^1\times {\mathrm{131}}^1\times {\mathrm{13309}}^1$

素因数の和:13447

約数の個数: 24

約数和(自身を含む): 49193760

約数和(自身を除く): 28272012

約数列:

[1, 2, 3, 4, 6, 12, 131, 262, 393, 524, 786, 1572, 13309, 26618, 39927, 53236, 79854, 159708, 1743479, 3486958, 5230437, 6973916, 10460874, 20921748]

約数ペア:

[(1, 20921748), (2, 10460874), (3, 6973916), (4, 5230437), (6, 3486958), (12, 1743479), (131, 159708), (262, 79854), (393, 53236), (524, 39927), (786, 26618), (1572, 13309)]