81960270

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1$

素因数の和:350

約数の個数: 128

約数和(自身を含む): 238878720

約数和(自身を除く): 156918450

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 23, 30, 35, 42, 46, 69, 70, 71, 105, 115, 138, 142, 161, 210, 213, 230, 239, 322, 345, 355, 426, 478, 483, 497, 690, 710, 717, 805, 966, 994, 1065, 1195, 1434, 1491, 1610, 1633, 1673, 2130, 2390, 2415, 2485, 2982, 3266, 3346, 3585, 4830, 4899, 4970, 5019, 5497, 7170, 7455, 8165, 8365, 9798, 10038, 10994, 11431, 14910, 16330, 16491, 16730, 16969, 22862, 24495, 25095, 27485, 32982, 33938, 34293, 38479, 48990, 50190, 50907, 54970, 57155, 68586, 76958, 82455, 84845, 101814, 114310, 115437, 118783, 164910, 169690, 171465, 192395, 230874, 237566, 254535, 342930, 356349, 384790, 390287, 509070, 577185, 593915, 712698, 780574, 1154370, 1170861, 1187830, 1781745, 1951435, 2341722, 2732009, 3563490, 3902870, 5464018, 5854305, 8196027, 11708610, 13660045, 16392054, 27320090, 40980135, 81960270]

約数ペア:

[(1, 81960270), (2, 40980135), (3, 27320090), (5, 16392054), (6, 13660045), (7, 11708610), (10, 8196027), (14, 5854305), (15, 5464018), (21, 3902870), (23, 3563490), (30, 2732009), (35, 2341722), (42, 1951435), (46, 1781745), (69, 1187830), (70, 1170861), (71, 1154370), (105, 780574), (115, 712698), (138, 593915), (142, 577185), (161, 509070), (210, 390287), (213, 384790), (230, 356349), (239, 342930), (322, 254535), (345, 237566), (355, 230874), (426, 192395), (478, 171465), (483, 169690), (497, 164910), (690, 118783), (710, 115437), (717, 114310), (805, 101814), (966, 84845), (994, 82455), (1065, 76958), (1195, 68586), (1434, 57155), (1491, 54970), (1610, 50907), (1633, 50190), (1673, 48990), (2130, 38479), (2390, 34293), (2415, 33938), (2485, 32982), (2982, 27485), (3266, 25095), (3346, 24495), (3585, 22862), (4830, 16969), (4899, 16730), (4970, 16491), (5019, 16330), (5497, 14910), (7170, 11431), (7455, 10994), (8165, 10038), (8365, 9798)]