21215552

素因数分解:

$2^6\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:343

約数の個数: 56

約数和(自身を含む): 45110400

約数和(自身を除く): 23894848

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 73, 76, 146, 152, 239, 292, 304, 478, 584, 608, 956, 1168, 1216, 1387, 1912, 2336, 2774, 3824, 4541, 4672, 5548, 7648, 9082, 11096, 15296, 17447, 18164, 22192, 34894, 36328, 44384, 69788, 72656, 88768, 139576, 145312, 279152, 290624, 331493, 558304, 662986, 1116608, 1325972, 2651944, 5303888, 10607776, 21215552]

約数ペア:

[(1, 21215552), (2, 10607776), (4, 5303888), (8, 2651944), (16, 1325972), (19, 1116608), (32, 662986), (38, 558304), (64, 331493), (73, 290624), (76, 279152), (146, 145312), (152, 139576), (239, 88768), (292, 72656), (304, 69788), (478, 44384), (584, 36328), (608, 34894), (956, 22192), (1168, 18164), (1216, 17447), (1387, 15296), (1912, 11096), (2336, 9082), (2774, 7648), (3824, 5548), (4541, 4672)]