20986140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1723}}^1$

素因数の和:1771

約数の個数: 96

約数和(自身を含む): 69511680

約数和(自身を除く): 48525540

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 35, 42, 58, 60, 70, 84, 87, 105, 116, 140, 145, 174, 203, 210, 290, 348, 406, 420, 435, 580, 609, 812, 870, 1015, 1218, 1723, 1740, 2030, 2436, 3045, 3446, 4060, 5169, 6090, 6892, 8615, 10338, 12061, 12180, 17230, 20676, 24122, 25845, 34460, 36183, 48244, 49967, 51690, 60305, 72366, 99934, 103380, 120610, 144732, 149901, 180915, 199868, 241220, 249835, 299802, 349769, 361830, 499670, 599604, 699538, 723660, 749505, 999340, 1049307, 1399076, 1499010, 1748845, 2098614, 2998020, 3497690, 4197228, 5246535, 6995380, 10493070, 20986140]

約数ペア:

[(1, 20986140), (2, 10493070), (3, 6995380), (4, 5246535), (5, 4197228), (6, 3497690), (7, 2998020), (10, 2098614), (12, 1748845), (14, 1499010), (15, 1399076), (20, 1049307), (21, 999340), (28, 749505), (29, 723660), (30, 699538), (35, 599604), (42, 499670), (58, 361830), (60, 349769), (70, 299802), (84, 249835), (87, 241220), (105, 199868), (116, 180915), (140, 149901), (145, 144732), (174, 120610), (203, 103380), (210, 99934), (290, 72366), (348, 60305), (406, 51690), (420, 49967), (435, 48244), (580, 36183), (609, 34460), (812, 25845), (870, 24122), (1015, 20676), (1218, 17230), (1723, 12180), (1740, 12061), (2030, 10338), (2436, 8615), (3045, 6892), (3446, 6090), (4060, 5169)]