84240680

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{557}}^1$

素因数の和:786

約数の個数: 64

約数和(自身を含む): 200880000

約数和(自身を除く): 116639320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 199, 380, 398, 557, 760, 796, 995, 1114, 1592, 1990, 2228, 2785, 3781, 3980, 4456, 5570, 7562, 7960, 10583, 11140, 15124, 18905, 21166, 22280, 30248, 37810, 42332, 52915, 75620, 84664, 105830, 110843, 151240, 211660, 221686, 423320, 443372, 554215, 886744, 1108430, 2106017, 2216860, 4212034, 4433720, 8424068, 10530085, 16848136, 21060170, 42120340, 84240680]

約数ペア:

[(1, 84240680), (2, 42120340), (4, 21060170), (5, 16848136), (8, 10530085), (10, 8424068), (19, 4433720), (20, 4212034), (38, 2216860), (40, 2106017), (76, 1108430), (95, 886744), (152, 554215), (190, 443372), (199, 423320), (380, 221686), (398, 211660), (557, 151240), (760, 110843), (796, 105830), (995, 84664), (1114, 75620), (1592, 52915), (1990, 42332), (2228, 37810), (2785, 30248), (3781, 22280), (3980, 21166), (4456, 18905), (5570, 15124), (7562, 11140), (7960, 10583)]