21987952

素因数分解:

$2^4\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1433}}^1$

素因数の和:1585

約数の個数: 40

約数和(自身を含む): 49077216

約数和(自身を除く): 27089264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 137, 274, 548, 959, 1096, 1433, 1918, 2192, 2866, 3836, 5732, 7672, 10031, 11464, 15344, 20062, 22928, 40124, 80248, 160496, 196321, 392642, 785284, 1374247, 1570568, 2748494, 3141136, 5496988, 10993976, 21987952]

約数ペア:

[(1, 21987952), (2, 10993976), (4, 5496988), (7, 3141136), (8, 2748494), (14, 1570568), (16, 1374247), (28, 785284), (56, 392642), (112, 196321), (137, 160496), (274, 80248), (548, 40124), (959, 22928), (1096, 20062), (1433, 15344), (1918, 11464), (2192, 10031), (2866, 7672), (3836, 5732)]