21798040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{463}}^1$

素因数の和:592

約数の個数: 64

約数和(自身を含む): 54120960

約数和(自身を除く): 32322920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 107, 110, 214, 220, 428, 440, 463, 535, 856, 926, 1070, 1177, 1852, 2140, 2315, 2354, 3704, 4280, 4630, 4708, 5093, 5885, 9260, 9416, 10186, 11770, 18520, 20372, 23540, 25465, 40744, 47080, 49541, 50930, 99082, 101860, 198164, 203720, 247705, 396328, 495410, 544951, 990820, 1089902, 1981640, 2179804, 2724755, 4359608, 5449510, 10899020, 21798040]

約数ペア:

[(1, 21798040), (2, 10899020), (4, 5449510), (5, 4359608), (8, 2724755), (10, 2179804), (11, 1981640), (20, 1089902), (22, 990820), (40, 544951), (44, 495410), (55, 396328), (88, 247705), (107, 203720), (110, 198164), (214, 101860), (220, 99082), (428, 50930), (440, 49541), (463, 47080), (535, 40744), (856, 25465), (926, 23540), (1070, 20372), (1177, 18520), (1852, 11770), (2140, 10186), (2315, 9416), (2354, 9260), (3704, 5885), (4280, 5093), (4630, 4708)]