21332128

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1$

素因数の和:509

約数の個数: 48

約数和(自身を含む): 44241120

約数和(自身を除く): 22908992

約数列:

[1, 2, 4, 8, 16, 32, 37, 43, 74, 86, 148, 172, 296, 344, 419, 592, 688, 838, 1184, 1376, 1591, 1676, 3182, 3352, 6364, 6704, 12728, 13408, 15503, 18017, 25456, 31006, 36034, 50912, 62012, 72068, 124024, 144136, 248048, 288272, 496096, 576544, 666629, 1333258, 2666516, 5333032, 10666064, 21332128]

約数ペア:

[(1, 21332128), (2, 10666064), (4, 5333032), (8, 2666516), (16, 1333258), (32, 666629), (37, 576544), (43, 496096), (74, 288272), (86, 248048), (148, 144136), (172, 124024), (296, 72068), (344, 62012), (419, 50912), (592, 36034), (688, 31006), (838, 25456), (1184, 18017), (1376, 15503), (1591, 13408), (1676, 12728), (3182, 6704), (3352, 6364)]