642886790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1433}}^1$

素因数の和:1506

約数の個数: 128

約数和(自身を含む): 1561109760

約数和(自身を除く): 918222970

約数列:

[1, 2, 5, 7, 10, 13, 14, 17, 26, 29, 34, 35, 58, 65, 70, 85, 91, 119, 130, 145, 170, 182, 203, 221, 238, 290, 377, 406, 442, 455, 493, 595, 754, 910, 986, 1015, 1105, 1190, 1433, 1547, 1885, 2030, 2210, 2465, 2639, 2866, 3094, 3451, 3770, 4930, 5278, 6409, 6902, 7165, 7735, 10031, 12818, 13195, 14330, 15470, 17255, 18629, 20062, 24361, 26390, 32045, 34510, 37258, 41557, 44863, 48722, 50155, 64090, 83114, 89726, 93145, 100310, 121805, 130403, 170527, 186290, 207785, 224315, 243610, 260806, 290899, 316693, 341054, 415570, 448630, 540241, 581798, 633386, 652015, 706469, 852635, 1080482, 1304030, 1412938, 1454495, 1583465, 1705270, 2216851, 2701205, 2908990, 3166930, 3532345, 3781687, 4433702, 4945283, 5402410, 7064690, 7563374, 9184097, 9890566, 11084255, 18368194, 18908435, 22168510, 24726415, 37816870, 45920485, 49452830, 64288679, 91840970, 128577358, 321443395, 642886790]

約数ペア:

[(1, 642886790), (2, 321443395), (5, 128577358), (7, 91840970), (10, 64288679), (13, 49452830), (14, 45920485), (17, 37816870), (26, 24726415), (29, 22168510), (34, 18908435), (35, 18368194), (58, 11084255), (65, 9890566), (70, 9184097), (85, 7563374), (91, 7064690), (119, 5402410), (130, 4945283), (145, 4433702), (170, 3781687), (182, 3532345), (203, 3166930), (221, 2908990), (238, 2701205), (290, 2216851), (377, 1705270), (406, 1583465), (442, 1454495), (455, 1412938), (493, 1304030), (595, 1080482), (754, 852635), (910, 706469), (986, 652015), (1015, 633386), (1105, 581798), (1190, 540241), (1433, 448630), (1547, 415570), (1885, 341054), (2030, 316693), (2210, 290899), (2465, 260806), (2639, 243610), (2866, 224315), (3094, 207785), (3451, 186290), (3770, 170527), (4930, 130403), (5278, 121805), (6409, 100310), (6902, 93145), (7165, 89726), (7735, 83114), (10031, 64090), (12818, 50155), (13195, 48722), (14330, 44863), (15470, 41557), (17255, 37258), (18629, 34510), (20062, 32045), (24361, 26390)]