21133072

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{311}}^1$

素因数の和:487

約数の個数: 40

約数和(自身を含む): 42711552

約数和(自身を除く): 21578480

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 137, 248, 274, 311, 496, 548, 622, 1096, 1244, 2192, 2488, 4247, 4976, 8494, 9641, 16988, 19282, 33976, 38564, 42607, 67952, 77128, 85214, 154256, 170428, 340856, 681712, 1320817, 2641634, 5283268, 10566536, 21133072]

約数ペア:

[(1, 21133072), (2, 10566536), (4, 5283268), (8, 2641634), (16, 1320817), (31, 681712), (62, 340856), (124, 170428), (137, 154256), (248, 85214), (274, 77128), (311, 67952), (496, 42607), (548, 38564), (622, 33976), (1096, 19282), (1244, 16988), (2192, 9641), (2488, 8494), (4247, 4976)]