81509988

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1$

素因数の和:337

約数の個数: 96

約数和(自身を含む): 224501760

約数和(自身を除く): 142991772

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 71, 79, 84, 142, 158, 173, 213, 237, 284, 316, 346, 426, 474, 497, 519, 553, 692, 852, 948, 994, 1038, 1106, 1211, 1491, 1659, 1988, 2076, 2212, 2422, 2982, 3318, 3633, 4844, 5609, 5964, 6636, 7266, 11218, 12283, 13667, 14532, 16827, 22436, 24566, 27334, 33654, 36849, 39263, 41001, 49132, 54668, 67308, 73698, 78526, 82002, 85981, 95669, 117789, 147396, 157052, 164004, 171962, 191338, 235578, 257943, 287007, 343924, 382676, 471156, 515886, 574014, 970357, 1031772, 1148028, 1940714, 2911071, 3881428, 5822142, 6792499, 11644284, 13584998, 20377497, 27169996, 40754994, 81509988]

約数ペア:

[(1, 81509988), (2, 40754994), (3, 27169996), (4, 20377497), (6, 13584998), (7, 11644284), (12, 6792499), (14, 5822142), (21, 3881428), (28, 2911071), (42, 1940714), (71, 1148028), (79, 1031772), (84, 970357), (142, 574014), (158, 515886), (173, 471156), (213, 382676), (237, 343924), (284, 287007), (316, 257943), (346, 235578), (426, 191338), (474, 171962), (497, 164004), (519, 157052), (553, 147396), (692, 117789), (852, 95669), (948, 85981), (994, 82002), (1038, 78526), (1106, 73698), (1211, 67308), (1491, 54668), (1659, 49132), (1988, 41001), (2076, 39263), (2212, 36849), (2422, 33654), (2982, 27334), (3318, 24566), (3633, 22436), (4844, 16827), (5609, 14532), (5964, 13667), (6636, 12283), (7266, 11218)]