221897415

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{11863}}^1$

素因数の和:11943

約数の個数: 32

約数和(自身を含む): 375851520

約数和(自身を除く): 153954105

約数列:

[1, 3, 5, 15, 29, 43, 87, 129, 145, 215, 435, 645, 1247, 3741, 6235, 11863, 18705, 35589, 59315, 177945, 344027, 510109, 1032081, 1530327, 1720135, 2550545, 5160405, 7651635, 14793161, 44379483, 73965805, 221897415]

約数ペア:

[(1, 221897415), (3, 73965805), (5, 44379483), (15, 14793161), (29, 7651635), (43, 5160405), (87, 2550545), (129, 1720135), (145, 1530327), (215, 1032081), (435, 510109), (645, 344027), (1247, 177945), (3741, 59315), (6235, 35589), (11863, 18705)]