81299988

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:378

約数の個数: 144

約数和(自身を含む): 259284480

約数和(自身を除く): 177984492

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 126, 132, 139, 154, 198, 211, 231, 252, 278, 308, 396, 417, 422, 462, 556, 633, 693, 834, 844, 924, 973, 1251, 1266, 1386, 1477, 1529, 1668, 1899, 1946, 2321, 2502, 2532, 2772, 2919, 2954, 3058, 3798, 3892, 4431, 4587, 4642, 5004, 5838, 5908, 6116, 6963, 7596, 8757, 8862, 9174, 9284, 10703, 11676, 13293, 13761, 13926, 16247, 17514, 17724, 18348, 20889, 21406, 26586, 27522, 27852, 29329, 32109, 32494, 35028, 41778, 42812, 48741, 53172, 55044, 58658, 64218, 64988, 83556, 87987, 96327, 97482, 117316, 128436, 146223, 175974, 192654, 194964, 205303, 263961, 292446, 322619, 351948, 385308, 410606, 527922, 584892, 615909, 645238, 821212, 967857, 1055844, 1231818, 1290476, 1847727, 1935714, 2258333, 2463636, 2903571, 3695454, 3871428, 4516666, 5807142, 6774999, 7390908, 9033332, 11614284, 13549998, 20324997, 27099996, 40649994, 81299988]

約数ペア:

[(1, 81299988), (2, 40649994), (3, 27099996), (4, 20324997), (6, 13549998), (7, 11614284), (9, 9033332), (11, 7390908), (12, 6774999), (14, 5807142), (18, 4516666), (21, 3871428), (22, 3695454), (28, 2903571), (33, 2463636), (36, 2258333), (42, 1935714), (44, 1847727), (63, 1290476), (66, 1231818), (77, 1055844), (84, 967857), (99, 821212), (126, 645238), (132, 615909), (139, 584892), (154, 527922), (198, 410606), (211, 385308), (231, 351948), (252, 322619), (278, 292446), (308, 263961), (396, 205303), (417, 194964), (422, 192654), (462, 175974), (556, 146223), (633, 128436), (693, 117316), (834, 97482), (844, 96327), (924, 87987), (973, 83556), (1251, 64988), (1266, 64218), (1386, 58658), (1477, 55044), (1529, 53172), (1668, 48741), (1899, 42812), (1946, 41778), (2321, 35028), (2502, 32494), (2532, 32109), (2772, 29329), (2919, 27852), (2954, 27522), (3058, 26586), (3798, 21406), (3892, 20889), (4431, 18348), (4587, 17724), (4642, 17514), (5004, 16247), (5838, 13926), (5908, 13761), (6116, 13293), (6963, 11676), (7596, 10703), (8757, 9284), (8862, 9174)]