20783122591

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{101}}^1\times {\mathrm{1321}}^1$

素因数の和:1481

約数の個数: 72

約数和(自身を含む): 28315621872

約数和(自身を除く): 7532499281

約数列:

[1, 7, 11, 17, 49, 77, 101, 119, 187, 289, 539, 707, 833, 1111, 1309, 1321, 1717, 2023, 3179, 4949, 7777, 9163, 9247, 12019, 14161, 14531, 18887, 22253, 22457, 29189, 54439, 64729, 84133, 101717, 132209, 133421, 155771, 157199, 204323, 247027, 321079, 381769, 712019, 925463, 933947, 1100393, 1430261, 1467631, 1729189, 2247553, 2268157, 2672383, 4199459, 6537629, 10273417, 12104323, 15732871, 15877099, 18706681, 24949727, 29396213, 38558669, 71913919, 111139693, 174648089, 205773491, 269910683, 424145359, 1222536623, 1889374781, 2969017513, 20783122591]

約数ペア:

[(1, 20783122591), (7, 2969017513), (11, 1889374781), (17, 1222536623), (49, 424145359), (77, 269910683), (101, 205773491), (119, 174648089), (187, 111139693), (289, 71913919), (539, 38558669), (707, 29396213), (833, 24949727), (1111, 18706681), (1309, 15877099), (1321, 15732871), (1717, 12104323), (2023, 10273417), (3179, 6537629), (4949, 4199459), (7777, 2672383), (9163, 2268157), (9247, 2247553), (12019, 1729189), (14161, 1467631), (14531, 1430261), (18887, 1100393), (22253, 933947), (22457, 925463), (29189, 712019), (54439, 381769), (64729, 321079), (84133, 247027), (101717, 204323), (132209, 157199), (133421, 155771)]