217810900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^2\times {\mathrm{349}}^1$

素因数の和:521

約数の個数: 54

約数和(自身を含む): 480079950

約数和(自身を除く): 262269050

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 349, 395, 698, 790, 1396, 1580, 1745, 1975, 3490, 3950, 6241, 6980, 7900, 8725, 12482, 17450, 24964, 27571, 31205, 34900, 55142, 62410, 110284, 124820, 137855, 156025, 275710, 312050, 551420, 624100, 689275, 1378550, 2178109, 2757100, 4356218, 8712436, 10890545, 21781090, 43562180, 54452725, 108905450, 217810900]

約数ペア:

[(1, 217810900), (2, 108905450), (4, 54452725), (5, 43562180), (10, 21781090), (20, 10890545), (25, 8712436), (50, 4356218), (79, 2757100), (100, 2178109), (158, 1378550), (316, 689275), (349, 624100), (395, 551420), (698, 312050), (790, 275710), (1396, 156025), (1580, 137855), (1745, 124820), (1975, 110284), (3490, 62410), (3950, 55142), (6241, 34900), (6980, 31205), (7900, 27571), (8725, 24964), (12482, 17450)]