21511504

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:260

約数の個数: 80

約数和(自身を含む): 50889600

約数和(自身を除く): 29378096

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 37, 56, 58, 74, 112, 116, 148, 179, 203, 232, 259, 296, 358, 406, 464, 518, 592, 716, 812, 1036, 1073, 1253, 1432, 1624, 2072, 2146, 2506, 2864, 3248, 4144, 4292, 5012, 5191, 6623, 7511, 8584, 10024, 10382, 13246, 15022, 17168, 20048, 20764, 26492, 30044, 36337, 41528, 46361, 52984, 60088, 72674, 83056, 92722, 105968, 120176, 145348, 185444, 192067, 290696, 370888, 384134, 581392, 741776, 768268, 1344469, 1536536, 2688938, 3073072, 5377876, 10755752, 21511504]

約数ペア:

[(1, 21511504), (2, 10755752), (4, 5377876), (7, 3073072), (8, 2688938), (14, 1536536), (16, 1344469), (28, 768268), (29, 741776), (37, 581392), (56, 384134), (58, 370888), (74, 290696), (112, 192067), (116, 185444), (148, 145348), (179, 120176), (203, 105968), (232, 92722), (259, 83056), (296, 72674), (358, 60088), (406, 52984), (464, 46361), (518, 41528), (592, 36337), (716, 30044), (812, 26492), (1036, 20764), (1073, 20048), (1253, 17168), (1432, 15022), (1624, 13246), (2072, 10382), (2146, 10024), (2506, 8584), (2864, 7511), (3248, 6623), (4144, 5191), (4292, 5012)]