21808815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{907}}^1$

素因数の和:1151

約数の個数: 32

約数和(自身を含む): 40097280

約数和(自身を除く): 18288465

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 229, 687, 907, 1145, 1603, 2721, 3435, 4535, 4809, 6349, 8015, 13605, 19047, 24045, 31745, 95235, 207703, 623109, 1038515, 1453921, 3115545, 4361763, 7269605, 21808815]

約数ペア:

[(1, 21808815), (3, 7269605), (5, 4361763), (7, 3115545), (15, 1453921), (21, 1038515), (35, 623109), (105, 207703), (229, 95235), (687, 31745), (907, 24045), (1145, 19047), (1603, 13605), (2721, 8015), (3435, 6349), (4535, 4809)]