21759570

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:449

約数の個数: 128

約数和(自身を含む): 68774400

約数和(自身を除く): 47014830

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 29, 30, 35, 42, 45, 54, 58, 63, 70, 87, 90, 105, 126, 135, 145, 174, 189, 203, 210, 261, 270, 290, 315, 378, 397, 406, 435, 522, 609, 630, 783, 794, 870, 945, 1015, 1191, 1218, 1305, 1566, 1827, 1890, 1985, 2030, 2382, 2610, 2779, 3045, 3573, 3654, 3915, 3970, 5481, 5558, 5955, 6090, 7146, 7830, 8337, 9135, 10719, 10962, 11513, 11910, 13895, 16674, 17865, 18270, 21438, 23026, 25011, 27405, 27790, 34539, 35730, 41685, 50022, 53595, 54810, 57565, 69078, 75033, 80591, 83370, 103617, 107190, 115130, 125055, 150066, 161182, 172695, 207234, 241773, 250110, 310851, 345390, 375165, 402955, 483546, 518085, 621702, 725319, 750330, 805910, 1036170, 1208865, 1450638, 1554255, 2175957, 2417730, 3108510, 3626595, 4351914, 7253190, 10879785, 21759570]

約数ペア:

[(1, 21759570), (2, 10879785), (3, 7253190), (5, 4351914), (6, 3626595), (7, 3108510), (9, 2417730), (10, 2175957), (14, 1554255), (15, 1450638), (18, 1208865), (21, 1036170), (27, 805910), (29, 750330), (30, 725319), (35, 621702), (42, 518085), (45, 483546), (54, 402955), (58, 375165), (63, 345390), (70, 310851), (87, 250110), (90, 241773), (105, 207234), (126, 172695), (135, 161182), (145, 150066), (174, 125055), (189, 115130), (203, 107190), (210, 103617), (261, 83370), (270, 80591), (290, 75033), (315, 69078), (378, 57565), (397, 54810), (406, 53595), (435, 50022), (522, 41685), (609, 35730), (630, 34539), (783, 27790), (794, 27405), (870, 25011), (945, 23026), (1015, 21438), (1191, 18270), (1218, 17865), (1305, 16674), (1566, 13895), (1827, 11910), (1890, 11513), (1985, 10962), (2030, 10719), (2382, 9135), (2610, 8337), (2779, 7830), (3045, 7146), (3573, 6090), (3654, 5955), (3915, 5558), (3970, 5481)]