21649628

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5407}}^1$

素因数の和:5442

約数の個数: 48

約数和(自身を含む): 50878464

約数和(自身を除く): 29228836

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 1001, 2002, 4004, 5407, 10814, 21628, 37849, 59477, 70291, 75698, 118954, 140582, 151396, 237908, 281164, 416339, 492037, 773201, 832678, 984074, 1546402, 1665356, 1968148, 3092804, 5412407, 10824814, 21649628]

約数ペア:

[(1, 21649628), (2, 10824814), (4, 5412407), (7, 3092804), (11, 1968148), (13, 1665356), (14, 1546402), (22, 984074), (26, 832678), (28, 773201), (44, 492037), (52, 416339), (77, 281164), (91, 237908), (143, 151396), (154, 140582), (182, 118954), (286, 75698), (308, 70291), (364, 59477), (572, 37849), (1001, 21628), (2002, 10814), (4004, 5407)]