21387344

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{887}}^1$

素因数の和:1043

約数の個数: 40

約数和(自身を含む): 45586368

約数和(自身を除く): 24199024

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 137, 176, 274, 548, 887, 1096, 1507, 1774, 2192, 3014, 3548, 6028, 7096, 9757, 12056, 14192, 19514, 24112, 39028, 78056, 121519, 156112, 243038, 486076, 972152, 1336709, 1944304, 2673418, 5346836, 10693672, 21387344]

約数ペア:

[(1, 21387344), (2, 10693672), (4, 5346836), (8, 2673418), (11, 1944304), (16, 1336709), (22, 972152), (44, 486076), (88, 243038), (137, 156112), (176, 121519), (274, 78056), (548, 39028), (887, 24112), (1096, 19514), (1507, 14192), (1774, 12056), (2192, 9757), (3014, 7096), (3548, 6028)]