19005251920

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1\times {\mathrm{7681}}^1$

素因数の和:8048

約数の個数: 80

約数和(自身を含む): 44700205968

約数和(自身を除く): 25694954048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 197, 314, 394, 628, 785, 788, 985, 1256, 1570, 1576, 1970, 2512, 3140, 3152, 3940, 6280, 7681, 7880, 12560, 15362, 15760, 30724, 30929, 38405, 61448, 61858, 76810, 122896, 123716, 153620, 154645, 247432, 307240, 309290, 494864, 614480, 618580, 1205917, 1237160, 1513157, 2411834, 2474320, 3026314, 4823668, 6029585, 6052628, 7565785, 9647336, 12059170, 12105256, 15131570, 19294672, 24118340, 24210512, 30263140, 48236680, 60526280, 96473360, 121052560, 237565649, 475131298, 950262596, 1187828245, 1900525192, 2375656490, 3801050384, 4751312980, 9502625960, 19005251920]

約数ペア:

[(1, 19005251920), (2, 9502625960), (4, 4751312980), (5, 3801050384), (8, 2375656490), (10, 1900525192), (16, 1187828245), (20, 950262596), (40, 475131298), (80, 237565649), (157, 121052560), (197, 96473360), (314, 60526280), (394, 48236680), (628, 30263140), (785, 24210512), (788, 24118340), (985, 19294672), (1256, 15131570), (1570, 12105256), (1576, 12059170), (1970, 9647336), (2512, 7565785), (3140, 6052628), (3152, 6029585), (3940, 4823668), (6280, 3026314), (7681, 2474320), (7880, 2411834), (12560, 1513157), (15362, 1237160), (15760, 1205917), (30724, 618580), (30929, 614480), (38405, 494864), (61448, 309290), (61858, 307240), (76810, 247432), (122896, 154645), (123716, 153620)]