170720920

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{1279}}^1$

素因数の和:1408

約数の個数: 64

約数和(自身を含む): 398131200

約数和(自身を除く): 227410280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 71, 94, 142, 188, 235, 284, 355, 376, 470, 568, 710, 940, 1279, 1420, 1880, 2558, 2840, 3337, 5116, 6395, 6674, 10232, 12790, 13348, 16685, 25580, 26696, 33370, 51160, 60113, 66740, 90809, 120226, 133480, 181618, 240452, 300565, 363236, 454045, 480904, 601130, 726472, 908090, 1202260, 1816180, 2404520, 3632360, 4268023, 8536046, 17072092, 21340115, 34144184, 42680230, 85360460, 170720920]

約数ペア:

[(1, 170720920), (2, 85360460), (4, 42680230), (5, 34144184), (8, 21340115), (10, 17072092), (20, 8536046), (40, 4268023), (47, 3632360), (71, 2404520), (94, 1816180), (142, 1202260), (188, 908090), (235, 726472), (284, 601130), (355, 480904), (376, 454045), (470, 363236), (568, 300565), (710, 240452), (940, 181618), (1279, 133480), (1420, 120226), (1880, 90809), (2558, 66740), (2840, 60113), (3337, 51160), (5116, 33370), (6395, 26696), (6674, 25580), (10232, 16685), (12790, 13348)]