21997109455

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1531}}^1\times {\mathrm{3931}}^1$

素因数の和:5527

約数の個数: 32

約数和(自身を含む): 28625211648

約数和(自身を除く): 6628102193

約数列:

[1, 5, 17, 43, 85, 215, 731, 1531, 3655, 3931, 7655, 19655, 26027, 65833, 66827, 130135, 169033, 329165, 334135, 845165, 1119161, 2873561, 5595805, 6018361, 14367805, 30091805, 102312137, 258789523, 511560685, 1293947615, 4399421891, 21997109455]

約数ペア:

[(1, 21997109455), (5, 4399421891), (17, 1293947615), (43, 511560685), (85, 258789523), (215, 102312137), (731, 30091805), (1531, 14367805), (3655, 6018361), (3931, 5595805), (7655, 2873561), (19655, 1119161), (26027, 845165), (65833, 334135), (66827, 329165), (130135, 169033)]