20780820

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1327}}^1$

素因数の和:1374

約数の個数: 96

約数和(自身を含む): 66931200

約数和(自身を除く): 46150380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 29, 30, 36, 45, 54, 58, 60, 87, 90, 108, 116, 135, 145, 174, 180, 261, 270, 290, 348, 435, 522, 540, 580, 783, 870, 1044, 1305, 1327, 1566, 1740, 2610, 2654, 3132, 3915, 3981, 5220, 5308, 6635, 7830, 7962, 11943, 13270, 15660, 15924, 19905, 23886, 26540, 35829, 38483, 39810, 47772, 59715, 71658, 76966, 79620, 115449, 119430, 143316, 153932, 179145, 192415, 230898, 238860, 346347, 358290, 384830, 461796, 577245, 692694, 716580, 769660, 1039041, 1154490, 1385388, 1731735, 2078082, 2308980, 3463470, 4156164, 5195205, 6926940, 10390410, 20780820]

約数ペア:

[(1, 20780820), (2, 10390410), (3, 6926940), (4, 5195205), (5, 4156164), (6, 3463470), (9, 2308980), (10, 2078082), (12, 1731735), (15, 1385388), (18, 1154490), (20, 1039041), (27, 769660), (29, 716580), (30, 692694), (36, 577245), (45, 461796), (54, 384830), (58, 358290), (60, 346347), (87, 238860), (90, 230898), (108, 192415), (116, 179145), (135, 153932), (145, 143316), (174, 119430), (180, 115449), (261, 79620), (270, 76966), (290, 71658), (348, 59715), (435, 47772), (522, 39810), (540, 38483), (580, 35829), (783, 26540), (870, 23886), (1044, 19905), (1305, 15924), (1327, 15660), (1566, 13270), (1740, 11943), (2610, 7962), (2654, 7830), (3132, 6635), (3915, 5308), (3981, 5220)]