21680835

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 41057280

約数和(自身を除く): 19376445

約数列:

[1, 3, 5, 11, 15, 23, 29, 33, 55, 69, 87, 115, 145, 165, 197, 253, 319, 345, 435, 591, 667, 759, 957, 985, 1265, 1595, 2001, 2167, 2955, 3335, 3795, 4531, 4785, 5713, 6501, 7337, 10005, 10835, 13593, 17139, 22011, 22655, 28565, 32505, 36685, 49841, 62843, 67965, 85695, 110055, 131399, 149523, 188529, 249205, 314215, 394197, 656995, 747615, 942645, 1445389, 1970985, 4336167, 7226945, 21680835]

約数ペア:

[(1, 21680835), (3, 7226945), (5, 4336167), (11, 1970985), (15, 1445389), (23, 942645), (29, 747615), (33, 656995), (55, 394197), (69, 314215), (87, 249205), (115, 188529), (145, 149523), (165, 131399), (197, 110055), (253, 85695), (319, 67965), (345, 62843), (435, 49841), (591, 36685), (667, 32505), (759, 28565), (957, 22655), (985, 22011), (1265, 17139), (1595, 13593), (2001, 10835), (2167, 10005), (2955, 7337), (3335, 6501), (3795, 5713), (4531, 4785)]