21367345

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 28512000

約数和(自身を除く): 7144655

約数列:

[1, 5, 23, 29, 43, 115, 145, 149, 215, 667, 745, 989, 1247, 3335, 3427, 4321, 4945, 6235, 6407, 17135, 21605, 28681, 32035, 99383, 143405, 147361, 185803, 496915, 736805, 929015, 4273469, 21367345]

約数ペア:

[(1, 21367345), (5, 4273469), (23, 929015), (29, 736805), (43, 496915), (115, 185803), (145, 147361), (149, 143405), (215, 99383), (667, 32035), (745, 28681), (989, 21605), (1247, 17135), (3335, 6407), (3427, 6235), (4321, 4945)]