20540672

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 44640960

約数和(自身を除く): 24100288

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 41, 64, 76, 82, 103, 128, 152, 164, 206, 256, 304, 328, 412, 608, 656, 779, 824, 1216, 1312, 1558, 1648, 1957, 2432, 2624, 3116, 3296, 3914, 4223, 4864, 5248, 6232, 6592, 7828, 8446, 10496, 12464, 13184, 15656, 16892, 24928, 26368, 31312, 33784, 49856, 62624, 67568, 80237, 99712, 125248, 135136, 160474, 199424, 250496, 270272, 320948, 500992, 540544, 641896, 1081088, 1283792, 2567584, 5135168, 10270336, 20540672]

約数ペア:

[(1, 20540672), (2, 10270336), (4, 5135168), (8, 2567584), (16, 1283792), (19, 1081088), (32, 641896), (38, 540544), (41, 500992), (64, 320948), (76, 270272), (82, 250496), (103, 199424), (128, 160474), (152, 135136), (164, 125248), (206, 99712), (256, 80237), (304, 67568), (328, 62624), (412, 49856), (608, 33784), (656, 31312), (779, 26368), (824, 24928), (1216, 16892), (1312, 15656), (1558, 13184), (1648, 12464), (1957, 10496), (2432, 8446), (2624, 7828), (3116, 6592), (3296, 6232), (3914, 5248), (4223, 4864)]