18368680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{383}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 27250520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 109, 110, 218, 220, 383, 436, 440, 545, 766, 872, 1090, 1199, 1532, 1915, 2180, 2398, 3064, 3830, 4213, 4360, 4796, 5995, 7660, 8426, 9592, 11990, 15320, 16852, 21065, 23980, 33704, 41747, 42130, 47960, 83494, 84260, 166988, 168520, 208735, 333976, 417470, 459217, 834940, 918434, 1669880, 1836868, 2296085, 3673736, 4592170, 9184340, 18368680]

約数ペア:

[(1, 18368680), (2, 9184340), (4, 4592170), (5, 3673736), (8, 2296085), (10, 1836868), (11, 1669880), (20, 918434), (22, 834940), (40, 459217), (44, 417470), (55, 333976), (88, 208735), (109, 168520), (110, 166988), (218, 84260), (220, 83494), (383, 47960), (436, 42130), (440, 41747), (545, 33704), (766, 23980), (872, 21065), (1090, 16852), (1199, 15320), (1532, 11990), (1915, 9592), (2180, 8426), (2398, 7660), (3064, 5995), (3830, 4796), (4213, 4360)]