15881240

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3931}}^1$

素因数の和:4043

約数の個数: 32

約数和(自身を含む): 36095760

約数和(自身を除く): 20214520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 3931, 4040, 7862, 15724, 19655, 31448, 39310, 78620, 157240, 397031, 794062, 1588124, 1985155, 3176248, 3970310, 7940620, 15881240]

約数ペア:

[(1, 15881240), (2, 7940620), (4, 3970310), (5, 3176248), (8, 1985155), (10, 1588124), (20, 794062), (40, 397031), (101, 157240), (202, 78620), (404, 39310), (505, 31448), (808, 19655), (1010, 15724), (2020, 7862), (3931, 4040)]