21050820

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5569}}^1$

素因数の和:5594

約数の個数: 96

約数和(自身を含む): 74860800

約数和(自身を除く): 53809980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 5569, 11138, 16707, 22276, 27845, 33414, 38983, 50121, 55690, 66828, 77966, 83535, 100242, 111380, 116949, 150363, 155932, 167070, 194915, 200484, 233898, 250605, 300726, 334140, 350847, 389830, 467796, 501210, 584745, 601452, 701694, 751815, 779660, 1002420, 1052541, 1169490, 1403388, 1503630, 1754235, 2105082, 2338980, 3007260, 3508470, 4210164, 5262705, 7016940, 10525410, 21050820]

約数ペア:

[(1, 21050820), (2, 10525410), (3, 7016940), (4, 5262705), (5, 4210164), (6, 3508470), (7, 3007260), (9, 2338980), (10, 2105082), (12, 1754235), (14, 1503630), (15, 1403388), (18, 1169490), (20, 1052541), (21, 1002420), (27, 779660), (28, 751815), (30, 701694), (35, 601452), (36, 584745), (42, 501210), (45, 467796), (54, 389830), (60, 350847), (63, 334140), (70, 300726), (84, 250605), (90, 233898), (105, 200484), (108, 194915), (126, 167070), (135, 155932), (140, 150363), (180, 116949), (189, 111380), (210, 100242), (252, 83535), (270, 77966), (315, 66828), (378, 55690), (420, 50121), (540, 38983), (630, 33414), (756, 27845), (945, 22276), (1260, 16707), (1890, 11138), (3780, 5569)]