21167882960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{240763}}^1$

素因数の和:240940

約数の個数: 80

約数和(自身を含む): 56604579456

約数和(自身を除く): 35436696496

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 157, 280, 314, 560, 628, 785, 1099, 1256, 1570, 2198, 2512, 3140, 4396, 5495, 6280, 8792, 10990, 12560, 17584, 21980, 43960, 87920, 240763, 481526, 963052, 1203815, 1685341, 1926104, 2407630, 3370682, 3852208, 4815260, 6741364, 8426705, 9630520, 13482728, 16853410, 19261040, 26965456, 33706820, 37799791, 67413640, 75599582, 134827280, 151199164, 188998955, 264598537, 302398328, 377997910, 529197074, 604796656, 755995820, 1058394148, 1322992685, 1511991640, 2116788296, 2645985370, 3023983280, 4233576592, 5291970740, 10583941480, 21167882960]

約数ペア:

[(1, 21167882960), (2, 10583941480), (4, 5291970740), (5, 4233576592), (7, 3023983280), (8, 2645985370), (10, 2116788296), (14, 1511991640), (16, 1322992685), (20, 1058394148), (28, 755995820), (35, 604796656), (40, 529197074), (56, 377997910), (70, 302398328), (80, 264598537), (112, 188998955), (140, 151199164), (157, 134827280), (280, 75599582), (314, 67413640), (560, 37799791), (628, 33706820), (785, 26965456), (1099, 19261040), (1256, 16853410), (1570, 13482728), (2198, 9630520), (2512, 8426705), (3140, 6741364), (4396, 4815260), (5495, 3852208), (6280, 3370682), (8792, 2407630), (10990, 1926104), (12560, 1685341), (17584, 1203815), (21980, 963052), (43960, 481526), (87920, 240763)]