21748440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1523}}^1$

素因数の和:1561

約数の個数: 128

約数和(自身を含む): 79004160

約数和(自身を除く): 57255720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 51, 56, 60, 68, 70, 84, 85, 102, 105, 119, 120, 136, 140, 168, 170, 204, 210, 238, 255, 280, 340, 357, 408, 420, 476, 510, 595, 680, 714, 840, 952, 1020, 1190, 1428, 1523, 1785, 2040, 2380, 2856, 3046, 3570, 4569, 4760, 6092, 7140, 7615, 9138, 10661, 12184, 14280, 15230, 18276, 21322, 22845, 25891, 30460, 31983, 36552, 42644, 45690, 51782, 53305, 60920, 63966, 77673, 85288, 91380, 103564, 106610, 127932, 129455, 155346, 159915, 181237, 182760, 207128, 213220, 255864, 258910, 310692, 319830, 362474, 388365, 426440, 517820, 543711, 621384, 639660, 724948, 776730, 906185, 1035640, 1087422, 1279320, 1449896, 1553460, 1812370, 2174844, 2718555, 3106920, 3624740, 4349688, 5437110, 7249480, 10874220, 21748440]

約数ペア:

[(1, 21748440), (2, 10874220), (3, 7249480), (4, 5437110), (5, 4349688), (6, 3624740), (7, 3106920), (8, 2718555), (10, 2174844), (12, 1812370), (14, 1553460), (15, 1449896), (17, 1279320), (20, 1087422), (21, 1035640), (24, 906185), (28, 776730), (30, 724948), (34, 639660), (35, 621384), (40, 543711), (42, 517820), (51, 426440), (56, 388365), (60, 362474), (68, 319830), (70, 310692), (84, 258910), (85, 255864), (102, 213220), (105, 207128), (119, 182760), (120, 181237), (136, 159915), (140, 155346), (168, 129455), (170, 127932), (204, 106610), (210, 103564), (238, 91380), (255, 85288), (280, 77673), (340, 63966), (357, 60920), (408, 53305), (420, 51782), (476, 45690), (510, 42644), (595, 36552), (680, 31983), (714, 30460), (840, 25891), (952, 22845), (1020, 21322), (1190, 18276), (1428, 15230), (1523, 14280), (1785, 12184), (2040, 10661), (2380, 9138), (2856, 7615), (3046, 7140), (3570, 6092), (4569, 4760)]