21785670

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{491}}^1$

素因数の和:550

約数の個数: 96

約数和(自身を含む): 62169120

約数和(自身を除く): 40383450

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 29, 30, 34, 45, 51, 58, 85, 87, 90, 102, 145, 153, 170, 174, 255, 261, 290, 306, 435, 491, 493, 510, 522, 765, 870, 982, 986, 1305, 1473, 1479, 1530, 2455, 2465, 2610, 2946, 2958, 4419, 4437, 4910, 4930, 7365, 7395, 8347, 8838, 8874, 14239, 14730, 14790, 16694, 22095, 22185, 25041, 28478, 41735, 42717, 44190, 44370, 50082, 71195, 75123, 83470, 85434, 125205, 128151, 142390, 150246, 213585, 242063, 250410, 256302, 375615, 427170, 484126, 640755, 726189, 751230, 1210315, 1281510, 1452378, 2178567, 2420630, 3630945, 4357134, 7261890, 10892835, 21785670]

約数ペア:

[(1, 21785670), (2, 10892835), (3, 7261890), (5, 4357134), (6, 3630945), (9, 2420630), (10, 2178567), (15, 1452378), (17, 1281510), (18, 1210315), (29, 751230), (30, 726189), (34, 640755), (45, 484126), (51, 427170), (58, 375615), (85, 256302), (87, 250410), (90, 242063), (102, 213585), (145, 150246), (153, 142390), (170, 128151), (174, 125205), (255, 85434), (261, 83470), (290, 75123), (306, 71195), (435, 50082), (491, 44370), (493, 44190), (510, 42717), (522, 41735), (765, 28478), (870, 25041), (982, 22185), (986, 22095), (1305, 16694), (1473, 14790), (1479, 14730), (1530, 14239), (2455, 8874), (2465, 8838), (2610, 8347), (2946, 7395), (2958, 7365), (4419, 4930), (4437, 4910)]