19159720

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 45360000

約数和(自身を除く): 26200280

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 83, 116, 145, 166, 199, 232, 290, 332, 398, 415, 580, 664, 796, 830, 995, 1160, 1592, 1660, 1990, 2407, 3320, 3980, 4814, 5771, 7960, 9628, 11542, 12035, 16517, 19256, 23084, 24070, 28855, 33034, 46168, 48140, 57710, 66068, 82585, 96280, 115420, 132136, 165170, 230840, 330340, 478993, 660680, 957986, 1915972, 2394965, 3831944, 4789930, 9579860, 19159720]

約数ペア:

[(1, 19159720), (2, 9579860), (4, 4789930), (5, 3831944), (8, 2394965), (10, 1915972), (20, 957986), (29, 660680), (40, 478993), (58, 330340), (83, 230840), (116, 165170), (145, 132136), (166, 115420), (199, 96280), (232, 82585), (290, 66068), (332, 57710), (398, 48140), (415, 46168), (580, 33034), (664, 28855), (796, 24070), (830, 23084), (995, 19256), (1160, 16517), (1592, 12035), (1660, 11542), (1990, 9628), (2407, 7960), (3320, 5771), (3980, 4814)]