19755216

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:261

約数の個数: 120

約数和(自身を含む): 60865896

約数和(自身を除く): 41110680

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 61, 72, 78, 104, 117, 122, 144, 156, 173, 183, 208, 234, 244, 312, 346, 366, 468, 488, 519, 549, 624, 692, 732, 793, 936, 976, 1038, 1098, 1384, 1464, 1557, 1586, 1872, 2076, 2196, 2249, 2379, 2768, 2928, 3114, 3172, 4152, 4392, 4498, 4758, 6228, 6344, 6747, 7137, 8304, 8784, 8996, 9516, 10553, 12456, 12688, 13494, 14274, 17992, 19032, 20241, 21106, 24912, 26988, 28548, 31659, 35984, 38064, 40482, 42212, 53976, 57096, 63318, 80964, 84424, 94977, 107952, 114192, 126636, 137189, 161928, 168848, 189954, 253272, 274378, 323856, 379908, 411567, 506544, 548756, 759816, 823134, 1097512, 1234701, 1519632, 1646268, 2195024, 2469402, 3292536, 4938804, 6585072, 9877608, 19755216]

約数ペア:

[(1, 19755216), (2, 9877608), (3, 6585072), (4, 4938804), (6, 3292536), (8, 2469402), (9, 2195024), (12, 1646268), (13, 1519632), (16, 1234701), (18, 1097512), (24, 823134), (26, 759816), (36, 548756), (39, 506544), (48, 411567), (52, 379908), (61, 323856), (72, 274378), (78, 253272), (104, 189954), (117, 168848), (122, 161928), (144, 137189), (156, 126636), (173, 114192), (183, 107952), (208, 94977), (234, 84424), (244, 80964), (312, 63318), (346, 57096), (366, 53976), (468, 42212), (488, 40482), (519, 38064), (549, 35984), (624, 31659), (692, 28548), (732, 26988), (793, 24912), (936, 21106), (976, 20241), (1038, 19032), (1098, 17992), (1384, 14274), (1464, 13494), (1557, 12688), (1586, 12456), (1872, 10553), (2076, 9516), (2196, 8996), (2249, 8784), (2379, 8304), (2768, 7137), (2928, 6747), (3114, 6344), (3172, 6228), (4152, 4758), (4392, 4498)]