16611980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:124

約数の個数: 144

約数和(自身を含む): 46884096

約数和(自身を除く): 30272116

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 23, 28, 35, 44, 46, 49, 55, 67, 70, 77, 92, 98, 110, 115, 134, 140, 154, 161, 196, 220, 230, 245, 253, 268, 308, 322, 335, 385, 460, 469, 490, 506, 539, 644, 670, 737, 770, 805, 938, 980, 1012, 1078, 1127, 1265, 1340, 1474, 1540, 1541, 1610, 1771, 1876, 2156, 2254, 2345, 2530, 2695, 2948, 3082, 3220, 3283, 3542, 3685, 4508, 4690, 5060, 5159, 5390, 5635, 6164, 6566, 7084, 7370, 7705, 8855, 9380, 10318, 10780, 10787, 11270, 12397, 13132, 14740, 15410, 16415, 16951, 17710, 20636, 21574, 22540, 24794, 25795, 30820, 32830, 33902, 35420, 36113, 43148, 49588, 51590, 53935, 61985, 65660, 67804, 72226, 75509, 84755, 103180, 107870, 118657, 123970, 144452, 151018, 169510, 180565, 215740, 237314, 247940, 302036, 339020, 361130, 377545, 474628, 593285, 722260, 755090, 830599, 1186570, 1510180, 1661198, 2373140, 3322396, 4152995, 8305990, 16611980]

約数ペア:

[(1, 16611980), (2, 8305990), (4, 4152995), (5, 3322396), (7, 2373140), (10, 1661198), (11, 1510180), (14, 1186570), (20, 830599), (22, 755090), (23, 722260), (28, 593285), (35, 474628), (44, 377545), (46, 361130), (49, 339020), (55, 302036), (67, 247940), (70, 237314), (77, 215740), (92, 180565), (98, 169510), (110, 151018), (115, 144452), (134, 123970), (140, 118657), (154, 107870), (161, 103180), (196, 84755), (220, 75509), (230, 72226), (245, 67804), (253, 65660), (268, 61985), (308, 53935), (322, 51590), (335, 49588), (385, 43148), (460, 36113), (469, 35420), (490, 33902), (506, 32830), (539, 30820), (644, 25795), (670, 24794), (737, 22540), (770, 21574), (805, 20636), (938, 17710), (980, 16951), (1012, 16415), (1078, 15410), (1127, 14740), (1265, 13132), (1340, 12397), (1474, 11270), (1540, 10787), (1541, 10780), (1610, 10318), (1771, 9380), (1876, 8855), (2156, 7705), (2254, 7370), (2345, 7084), (2530, 6566), (2695, 6164), (2948, 5635), (3082, 5390), (3220, 5159), (3283, 5060), (3542, 4690), (3685, 4508)]