20736660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{509}}^1$

素因数の和:625

約数の個数: 96

約数和(自身を含む): 67173120

約数和(自身を除く): 46436460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 97, 105, 140, 194, 210, 291, 388, 420, 485, 509, 582, 679, 970, 1018, 1164, 1358, 1455, 1527, 1940, 2036, 2037, 2545, 2716, 2910, 3054, 3395, 3563, 4074, 5090, 5820, 6108, 6790, 7126, 7635, 8148, 10180, 10185, 10689, 13580, 14252, 15270, 17815, 20370, 21378, 30540, 35630, 40740, 42756, 49373, 53445, 71260, 98746, 106890, 148119, 197492, 213780, 246865, 296238, 345611, 493730, 592476, 691222, 740595, 987460, 1036833, 1382444, 1481190, 1728055, 2073666, 2962380, 3456110, 4147332, 5184165, 6912220, 10368330, 20736660]

約数ペア:

[(1, 20736660), (2, 10368330), (3, 6912220), (4, 5184165), (5, 4147332), (6, 3456110), (7, 2962380), (10, 2073666), (12, 1728055), (14, 1481190), (15, 1382444), (20, 1036833), (21, 987460), (28, 740595), (30, 691222), (35, 592476), (42, 493730), (60, 345611), (70, 296238), (84, 246865), (97, 213780), (105, 197492), (140, 148119), (194, 106890), (210, 98746), (291, 71260), (388, 53445), (420, 49373), (485, 42756), (509, 40740), (582, 35630), (679, 30540), (970, 21378), (1018, 20370), (1164, 17815), (1358, 15270), (1455, 14252), (1527, 13580), (1940, 10689), (2036, 10185), (2037, 10180), (2545, 8148), (2716, 7635), (2910, 7126), (3054, 6790), (3395, 6108), (3563, 5820), (4074, 5090)]