21066260

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{6709}}^1$

素因数の和:6875

約数の個数: 24

約数和(自身を含む): 44527560

約数和(自身を除く): 23461300

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 6709, 13418, 26836, 33545, 67090, 134180, 1053313, 2106626, 4213252, 5266565, 10533130, 21066260]

約数ペア:

[(1, 21066260), (2, 10533130), (4, 5266565), (5, 4213252), (10, 2106626), (20, 1053313), (157, 134180), (314, 67090), (628, 33545), (785, 26836), (1570, 13418), (3140, 6709)]