21611680

素因数分解:

$2^5\times 5^1\times {\mathrm{293}}^1\times {\mathrm{461}}^1$

素因数の和:769

約数の個数: 48

約数和(自身を含む): 51342984

約数和(自身を除く): 29731304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 293, 461, 586, 922, 1172, 1465, 1844, 2305, 2344, 2930, 3688, 4610, 4688, 5860, 7376, 9220, 9376, 11720, 14752, 18440, 23440, 36880, 46880, 73760, 135073, 270146, 540292, 675365, 1080584, 1350730, 2161168, 2701460, 4322336, 5402920, 10805840, 21611680]

約数ペア:

[(1, 21611680), (2, 10805840), (4, 5402920), (5, 4322336), (8, 2701460), (10, 2161168), (16, 1350730), (20, 1080584), (32, 675365), (40, 540292), (80, 270146), (160, 135073), (293, 73760), (461, 46880), (586, 36880), (922, 23440), (1172, 18440), (1465, 14752), (1844, 11720), (2305, 9376), (2344, 9220), (2930, 7376), (3688, 5860), (4610, 4688)]