21210554

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{7559}}^1$

素因数の和:7645

約数の個数: 16

約数和(自身を含む): 33747840

約数和(自身を除く): 12537286

約数列:

[1, 2, 23, 46, 61, 122, 1403, 2806, 7559, 15118, 173857, 347714, 461099, 922198, 10605277, 21210554]

約数ペア:

[(1, 21210554), (2, 10605277), (23, 922198), (46, 461099), (61, 347714), (122, 173857), (1403, 15118), (2806, 7559)]