7841240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:344

約数の個数: 64

約数和(自身を含む): 19595520

約数和(自身を除く): 11754280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 251, 284, 355, 440, 502, 568, 710, 781, 1004, 1255, 1420, 1562, 2008, 2510, 2761, 2840, 3124, 3905, 5020, 5522, 6248, 7810, 10040, 11044, 13805, 15620, 17821, 22088, 27610, 31240, 35642, 55220, 71284, 89105, 110440, 142568, 178210, 196031, 356420, 392062, 712840, 784124, 980155, 1568248, 1960310, 3920620, 7841240]

約数ペア:

[(1, 7841240), (2, 3920620), (4, 1960310), (5, 1568248), (8, 980155), (10, 784124), (11, 712840), (20, 392062), (22, 356420), (40, 196031), (44, 178210), (55, 142568), (71, 110440), (88, 89105), (110, 71284), (142, 55220), (220, 35642), (251, 31240), (284, 27610), (355, 22088), (440, 17821), (502, 15620), (568, 13805), (710, 11044), (781, 10040), (1004, 7810), (1255, 6248), (1420, 5522), (1562, 5020), (2008, 3905), (2510, 3124), (2761, 2840)]