16987915

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{449}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 24883200

約数和(自身を除く): 7895285

約数列:

[1, 5, 7, 23, 35, 47, 115, 161, 235, 329, 449, 805, 1081, 1645, 2245, 3143, 5405, 7567, 10327, 15715, 21103, 37835, 51635, 72289, 105515, 147721, 361445, 485369, 738605, 2426845, 3397583, 16987915]

約数ペア:

[(1, 16987915), (5, 3397583), (7, 2426845), (23, 738605), (35, 485369), (47, 361445), (115, 147721), (161, 105515), (235, 72289), (329, 51635), (449, 37835), (805, 21103), (1081, 15715), (1645, 10327), (2245, 7567), (3143, 5405)]