21041826

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1$

素因数の和:395

約数の個数: 64

約数和(自身を含む): 48722688

約数和(自身を除く): 27680862

約数列:

[1, 2, 3, 6, 13, 23, 26, 37, 39, 46, 69, 74, 78, 111, 138, 222, 299, 317, 481, 598, 634, 851, 897, 951, 962, 1443, 1702, 1794, 1902, 2553, 2886, 4121, 5106, 7291, 8242, 11063, 11729, 12363, 14582, 21873, 22126, 23458, 24726, 33189, 35187, 43746, 66378, 70374, 94783, 152477, 189566, 269767, 284349, 304954, 457431, 539534, 568698, 809301, 914862, 1618602, 3506971, 7013942, 10520913, 21041826]

約数ペア:

[(1, 21041826), (2, 10520913), (3, 7013942), (6, 3506971), (13, 1618602), (23, 914862), (26, 809301), (37, 568698), (39, 539534), (46, 457431), (69, 304954), (74, 284349), (78, 269767), (111, 189566), (138, 152477), (222, 94783), (299, 70374), (317, 66378), (481, 43746), (598, 35187), (634, 33189), (851, 24726), (897, 23458), (951, 22126), (962, 21873), (1443, 14582), (1702, 12363), (1794, 11729), (1902, 11063), (2553, 8242), (2886, 7291), (4121, 5106)]