21000391737

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{677}}^1$

素因数の和:843

約数の個数: 96

約数和(自身を含む): 33231980160

約数和(自身を除く): 12231588423

約数列:

[1, 3, 13, 17, 39, 51, 59, 61, 169, 177, 183, 221, 507, 663, 677, 767, 793, 1003, 1037, 2031, 2301, 2379, 2873, 3009, 3111, 3599, 8619, 8801, 9971, 10309, 10797, 11509, 13039, 13481, 26403, 29913, 30927, 34527, 39117, 39943, 40443, 41297, 46787, 61183, 114413, 119829, 123891, 140361, 149617, 169507, 175253, 183549, 343239, 448851, 508521, 519259, 525759, 536861, 608231, 679031, 702049, 795379, 1557777, 1610583, 1824693, 1945021, 2037093, 2106147, 2386137, 2436523, 5835063, 6750367, 6979193, 7309569, 8827403, 9126637, 10339927, 20251101, 20937579, 26482209, 27379911, 31019781, 31674799, 41420891, 95024397, 114756239, 118646281, 124262673, 344268717, 355938843, 411772387, 538471583, 1235317161, 1615414749, 7000130579, 21000391737]

約数ペア:

[(1, 21000391737), (3, 7000130579), (13, 1615414749), (17, 1235317161), (39, 538471583), (51, 411772387), (59, 355938843), (61, 344268717), (169, 124262673), (177, 118646281), (183, 114756239), (221, 95024397), (507, 41420891), (663, 31674799), (677, 31019781), (767, 27379911), (793, 26482209), (1003, 20937579), (1037, 20251101), (2031, 10339927), (2301, 9126637), (2379, 8827403), (2873, 7309569), (3009, 6979193), (3111, 6750367), (3599, 5835063), (8619, 2436523), (8801, 2386137), (9971, 2106147), (10309, 2037093), (10797, 1945021), (11509, 1824693), (13039, 1610583), (13481, 1557777), (26403, 795379), (29913, 702049), (30927, 679031), (34527, 608231), (39117, 536861), (39943, 525759), (40443, 519259), (41297, 508521), (46787, 448851), (61183, 343239), (114413, 183549), (119829, 175253), (123891, 169507), (140361, 149617)]