21249774

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12973}}^1$

素因数の和:13001

約数の個数: 48

約数和(自身を含む): 56670432

約数和(自身を除く): 35420658

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 182, 234, 273, 546, 819, 1638, 12973, 25946, 38919, 77838, 90811, 116757, 168649, 181622, 233514, 272433, 337298, 505947, 544866, 817299, 1011894, 1180543, 1517841, 1634598, 2361086, 3035682, 3541629, 7083258, 10624887, 21249774]

約数ペア:

[(1, 21249774), (2, 10624887), (3, 7083258), (6, 3541629), (7, 3035682), (9, 2361086), (13, 1634598), (14, 1517841), (18, 1180543), (21, 1011894), (26, 817299), (39, 544866), (42, 505947), (63, 337298), (78, 272433), (91, 233514), (117, 181622), (126, 168649), (182, 116757), (234, 90811), (273, 77838), (546, 38919), (819, 25946), (1638, 12973)]