18679915

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{2741}}^1$

素因数の和:2822

約数の個数: 16

約数和(自身を含む): 23690880

約数和(自身を除く): 5010965

約数列:

[1, 5, 29, 47, 145, 235, 1363, 2741, 6815, 13705, 79489, 128827, 397445, 644135, 3735983, 18679915]

約数ペア:

[(1, 18679915), (5, 3735983), (29, 644135), (47, 397445), (145, 128827), (235, 79489), (1363, 13705), (2741, 6815)]