81703128

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1999}}^1$

素因数の和:2152

約数の個数: 64

約数和(自身を含む): 221760000

約数和(自身を除く): 140056872

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 131, 156, 262, 312, 393, 524, 786, 1048, 1572, 1703, 1999, 3144, 3406, 3998, 5109, 5997, 6812, 7996, 10218, 11994, 13624, 15992, 20436, 23988, 25987, 40872, 47976, 51974, 77961, 103948, 155922, 207896, 261869, 311844, 523738, 623688, 785607, 1047476, 1571214, 2094952, 3142428, 3404297, 6284856, 6808594, 10212891, 13617188, 20425782, 27234376, 40851564, 81703128]

約数ペア:

[(1, 81703128), (2, 40851564), (3, 27234376), (4, 20425782), (6, 13617188), (8, 10212891), (12, 6808594), (13, 6284856), (24, 3404297), (26, 3142428), (39, 2094952), (52, 1571214), (78, 1047476), (104, 785607), (131, 623688), (156, 523738), (262, 311844), (312, 261869), (393, 207896), (524, 155922), (786, 103948), (1048, 77961), (1572, 51974), (1703, 47976), (1999, 40872), (3144, 25987), (3406, 23988), (3998, 20436), (5109, 15992), (5997, 13624), (6812, 11994), (7996, 10218)]