81566360

素因数分解:

$2^3\times 5^1\times {\mathrm{1423}}^1\times {\mathrm{1433}}^1$

素因数の和:2867

約数の個数: 32

約数和(自身を含む): 183781440

約数和(自身を除く): 102215080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1423, 1433, 2846, 2866, 5692, 5732, 7115, 7165, 11384, 11464, 14230, 14330, 28460, 28660, 56920, 57320, 2039159, 4078318, 8156636, 10195795, 16313272, 20391590, 40783180, 81566360]

約数ペア:

[(1, 81566360), (2, 40783180), (4, 20391590), (5, 16313272), (8, 10195795), (10, 8156636), (20, 4078318), (40, 2039159), (1423, 57320), (1433, 56920), (2846, 28660), (2866, 28460), (5692, 14330), (5732, 14230), (7115, 11464), (7165, 11384)]