21656360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{593}}^1$

素因数の和:698

約数の個数: 64

約数和(自身を含む): 53887680

約数和(自身を除く): 32231320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 83, 88, 110, 166, 220, 332, 415, 440, 593, 664, 830, 913, 1186, 1660, 1826, 2372, 2965, 3320, 3652, 4565, 4744, 5930, 6523, 7304, 9130, 11860, 13046, 18260, 23720, 26092, 32615, 36520, 49219, 52184, 65230, 98438, 130460, 196876, 246095, 260920, 393752, 492190, 541409, 984380, 1082818, 1968760, 2165636, 2707045, 4331272, 5414090, 10828180, 21656360]

約数ペア:

[(1, 21656360), (2, 10828180), (4, 5414090), (5, 4331272), (8, 2707045), (10, 2165636), (11, 1968760), (20, 1082818), (22, 984380), (40, 541409), (44, 492190), (55, 393752), (83, 260920), (88, 246095), (110, 196876), (166, 130460), (220, 98438), (332, 65230), (415, 52184), (440, 49219), (593, 36520), (664, 32615), (830, 26092), (913, 23720), (1186, 18260), (1660, 13046), (1826, 11860), (2372, 9130), (2965, 7304), (3320, 6523), (3652, 5930), (4565, 4744)]