19985328

素因数分解:

$2^4\times 3^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:104

約数の個数: 180

約数和(自身を含む): 65176384

約数和(自身を除く): 45191056

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 31, 33, 36, 37, 44, 48, 62, 66, 72, 74, 88, 93, 99, 111, 121, 124, 132, 144, 148, 176, 186, 198, 222, 242, 248, 264, 279, 296, 333, 341, 363, 372, 396, 407, 444, 484, 496, 528, 558, 592, 666, 682, 726, 744, 792, 814, 888, 968, 1023, 1089, 1116, 1147, 1221, 1332, 1364, 1452, 1488, 1584, 1628, 1776, 1936, 2046, 2178, 2232, 2294, 2442, 2664, 2728, 2904, 3069, 3256, 3441, 3663, 3751, 4092, 4356, 4464, 4477, 4588, 4884, 5328, 5456, 5808, 6138, 6512, 6882, 7326, 7502, 8184, 8712, 8954, 9176, 9768, 10323, 11253, 12276, 12617, 13431, 13764, 14652, 15004, 16368, 17424, 17908, 18352, 19536, 20646, 22506, 24552, 25234, 26862, 27528, 29304, 30008, 33759, 35816, 37851, 40293, 41292, 45012, 49104, 50468, 53724, 55056, 58608, 60016, 67518, 71632, 75702, 80586, 82584, 90024, 100936, 107448, 113553, 135036, 138787, 151404, 161172, 165168, 180048, 201872, 214896, 227106, 270072, 277574, 302808, 322344, 416361, 454212, 540144, 555148, 605616, 644688, 832722, 908424, 1110296, 1249083, 1665444, 1816848, 2220592, 2498166, 3330888, 4996332, 6661776, 9992664, 19985328]

約数ペア:

[(1, 19985328), (2, 9992664), (3, 6661776), (4, 4996332), (6, 3330888), (8, 2498166), (9, 2220592), (11, 1816848), (12, 1665444), (16, 1249083), (18, 1110296), (22, 908424), (24, 832722), (31, 644688), (33, 605616), (36, 555148), (37, 540144), (44, 454212), (48, 416361), (62, 322344), (66, 302808), (72, 277574), (74, 270072), (88, 227106), (93, 214896), (99, 201872), (111, 180048), (121, 165168), (124, 161172), (132, 151404), (144, 138787), (148, 135036), (176, 113553), (186, 107448), (198, 100936), (222, 90024), (242, 82584), (248, 80586), (264, 75702), (279, 71632), (296, 67518), (333, 60016), (341, 58608), (363, 55056), (372, 53724), (396, 50468), (407, 49104), (444, 45012), (484, 41292), (496, 40293), (528, 37851), (558, 35816), (592, 33759), (666, 30008), (682, 29304), (726, 27528), (744, 26862), (792, 25234), (814, 24552), (888, 22506), (968, 20646), (1023, 19536), (1089, 18352), (1116, 17908), (1147, 17424), (1221, 16368), (1332, 15004), (1364, 14652), (1452, 13764), (1488, 13431), (1584, 12617), (1628, 12276), (1776, 11253), (1936, 10323), (2046, 9768), (2178, 9176), (2232, 8954), (2294, 8712), (2442, 8184), (2664, 7502), (2728, 7326), (2904, 6882), (3069, 6512), (3256, 6138), (3441, 5808), (3663, 5456), (3751, 5328), (4092, 4884), (4356, 4588), (4464, 4477)]