81621430

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{499}}^1\times {\mathrm{1487}}^1$

素因数の和:2004

約数の個数: 32

約数和(自身を含む): 160704000

約数和(自身を除く): 79082570

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 499, 998, 1487, 2495, 2974, 4990, 5489, 7435, 10978, 14870, 16357, 27445, 32714, 54890, 81785, 163570, 742013, 1484026, 3710065, 7420130, 8162143, 16324286, 40810715, 81621430]

約数ペア:

[(1, 81621430), (2, 40810715), (5, 16324286), (10, 8162143), (11, 7420130), (22, 3710065), (55, 1484026), (110, 742013), (499, 163570), (998, 81785), (1487, 54890), (2495, 32714), (2974, 27445), (4990, 16357), (5489, 14870), (7435, 10978)]