21706384

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:248

約数の個数: 80

約数和(自身を含む): 51246720

約数和(自身を除く): 29540336

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 41, 56, 58, 82, 112, 116, 163, 164, 203, 232, 287, 326, 328, 406, 464, 574, 652, 656, 812, 1141, 1148, 1189, 1304, 1624, 2282, 2296, 2378, 2608, 3248, 4564, 4592, 4727, 4756, 6683, 8323, 9128, 9454, 9512, 13366, 16646, 18256, 18908, 19024, 26732, 33089, 33292, 37816, 46781, 53464, 66178, 66584, 75632, 93562, 106928, 132356, 133168, 187124, 193807, 264712, 374248, 387614, 529424, 748496, 775228, 1356649, 1550456, 2713298, 3100912, 5426596, 10853192, 21706384]

約数ペア:

[(1, 21706384), (2, 10853192), (4, 5426596), (7, 3100912), (8, 2713298), (14, 1550456), (16, 1356649), (28, 775228), (29, 748496), (41, 529424), (56, 387614), (58, 374248), (82, 264712), (112, 193807), (116, 187124), (163, 133168), (164, 132356), (203, 106928), (232, 93562), (287, 75632), (326, 66584), (328, 66178), (406, 53464), (464, 46781), (574, 37816), (652, 33292), (656, 33089), (812, 26732), (1141, 19024), (1148, 18908), (1189, 18256), (1304, 16646), (1624, 13366), (2282, 9512), (2296, 9454), (2378, 9128), (2608, 8323), (3248, 6683), (4564, 4756), (4592, 4727)]