721665963

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{347}}^1$

素因数の和:593

約数の個数: 64

約数和(自身を含む): 1190661120

約数和(自身を除く): 468995157

約数列:

[1, 3, 9, 17, 23, 27, 51, 69, 153, 197, 207, 347, 391, 459, 591, 621, 1041, 1173, 1773, 3123, 3349, 3519, 4531, 5319, 5899, 7981, 9369, 10047, 10557, 13593, 17697, 23943, 30141, 40779, 53091, 68359, 71829, 77027, 90423, 122337, 135677, 159273, 205077, 215487, 231081, 407031, 615231, 693243, 1162103, 1221093, 1572257, 1845693, 2079729, 3486309, 3663279, 4716771, 10458927, 14150313, 26728369, 31376781, 42450939, 80185107, 240555321, 721665963]

約数ペア:

[(1, 721665963), (3, 240555321), (9, 80185107), (17, 42450939), (23, 31376781), (27, 26728369), (51, 14150313), (69, 10458927), (153, 4716771), (197, 3663279), (207, 3486309), (347, 2079729), (391, 1845693), (459, 1572257), (591, 1221093), (621, 1162103), (1041, 693243), (1173, 615231), (1773, 407031), (3123, 231081), (3349, 215487), (3519, 205077), (4531, 159273), (5319, 135677), (5899, 122337), (7981, 90423), (9369, 77027), (10047, 71829), (10557, 68359), (13593, 53091), (17697, 40779), (23943, 30141)]