12888920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2663}}^1$

素因数の和:2696

約数の個数: 48

約数和(自身を含む): 31888080

約数和(自身を除く): 18999160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 2663, 4840, 5326, 10652, 13315, 21304, 26630, 29293, 53260, 58586, 106520, 117172, 146465, 234344, 292930, 322223, 585860, 644446, 1171720, 1288892, 1611115, 2577784, 3222230, 6444460, 12888920]

約数ペア:

[(1, 12888920), (2, 6444460), (4, 3222230), (5, 2577784), (8, 1611115), (10, 1288892), (11, 1171720), (20, 644446), (22, 585860), (40, 322223), (44, 292930), (55, 234344), (88, 146465), (110, 117172), (121, 106520), (220, 58586), (242, 53260), (440, 29293), (484, 26630), (605, 21304), (968, 13315), (1210, 10652), (2420, 5326), (2663, 4840)]