19875105

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 38085120

約数和(自身を除く): 18210015

約数列:

[1, 3, 5, 9, 15, 23, 27, 37, 45, 69, 111, 115, 135, 173, 185, 207, 333, 345, 519, 555, 621, 851, 865, 999, 1035, 1557, 1665, 2553, 2595, 3105, 3979, 4255, 4671, 4995, 6401, 7659, 7785, 11937, 12765, 19203, 19895, 22977, 23355, 32005, 35811, 38295, 57609, 59685, 96015, 107433, 114885, 147223, 172827, 179055, 288045, 441669, 537165, 736115, 864135, 1325007, 2208345, 3975021, 6625035, 19875105]

約数ペア:

[(1, 19875105), (3, 6625035), (5, 3975021), (9, 2208345), (15, 1325007), (23, 864135), (27, 736115), (37, 537165), (45, 441669), (69, 288045), (111, 179055), (115, 172827), (135, 147223), (173, 114885), (185, 107433), (207, 96015), (333, 59685), (345, 57609), (519, 38295), (555, 35811), (621, 32005), (851, 23355), (865, 22977), (999, 19895), (1035, 19203), (1557, 12765), (1665, 11937), (2553, 7785), (2595, 7659), (3105, 6401), (3979, 4995), (4255, 4671)]