21215168

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{593}}^1$

素因数の和:661

約数の個数: 56

約数和(自身を含む): 46469808

約数和(自身を除く): 25254640

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 64, 86, 104, 172, 208, 344, 416, 559, 593, 688, 832, 1118, 1186, 1376, 2236, 2372, 2752, 4472, 4744, 7709, 8944, 9488, 15418, 17888, 18976, 25499, 30836, 35776, 37952, 50998, 61672, 101996, 123344, 203992, 246688, 331487, 407984, 493376, 662974, 815968, 1325948, 1631936, 2651896, 5303792, 10607584, 21215168]

約数ペア:

[(1, 21215168), (2, 10607584), (4, 5303792), (8, 2651896), (13, 1631936), (16, 1325948), (26, 815968), (32, 662974), (43, 493376), (52, 407984), (64, 331487), (86, 246688), (104, 203992), (172, 123344), (208, 101996), (344, 61672), (416, 50998), (559, 37952), (593, 35776), (688, 30836), (832, 25499), (1118, 18976), (1186, 17888), (1376, 15418), (2236, 9488), (2372, 8944), (2752, 7709), (4472, 4744)]