205720809

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{773}}^1$

素因数の和:854

約数の個数: 64

約数和(自身を含む): 356659200

約数和(自身を除く): 150938391

約数列:

[1, 3, 7, 19, 21, 23, 29, 57, 69, 87, 133, 161, 203, 399, 437, 483, 551, 609, 667, 773, 1311, 1653, 2001, 2319, 3059, 3857, 4669, 5411, 9177, 11571, 12673, 14007, 14687, 16233, 17779, 22417, 38019, 44061, 53337, 67251, 88711, 102809, 124453, 156919, 266133, 308427, 337801, 373359, 425923, 470757, 515591, 1013403, 1277769, 1546773, 2364607, 2981461, 3609137, 7093821, 8944383, 9796229, 10827411, 29388687, 68573603, 205720809]

約数ペア:

[(1, 205720809), (3, 68573603), (7, 29388687), (19, 10827411), (21, 9796229), (23, 8944383), (29, 7093821), (57, 3609137), (69, 2981461), (87, 2364607), (133, 1546773), (161, 1277769), (203, 1013403), (399, 515591), (437, 470757), (483, 425923), (551, 373359), (609, 337801), (667, 308427), (773, 266133), (1311, 156919), (1653, 124453), (2001, 102809), (2319, 88711), (3059, 67251), (3857, 53337), (4669, 44061), (5411, 38019), (9177, 22417), (11571, 17779), (12673, 16233), (14007, 14687)]