81720054

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{20543}}^1$

素因数の和:20581

約数の個数: 48

約数和(自身を含む): 201906432

約数和(自身を除く): 120186378

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 20543, 41086, 61629, 123258, 184887, 267059, 349231, 369774, 534118, 698462, 801177, 1047693, 1602354, 2095386, 2403531, 3143079, 4540003, 4807062, 6286158, 9080006, 13620009, 27240018, 40860027, 81720054]

約数ペア:

[(1, 81720054), (2, 40860027), (3, 27240018), (6, 13620009), (9, 9080006), (13, 6286158), (17, 4807062), (18, 4540003), (26, 3143079), (34, 2403531), (39, 2095386), (51, 1602354), (78, 1047693), (102, 801177), (117, 698462), (153, 534118), (221, 369774), (234, 349231), (306, 267059), (442, 184887), (663, 123258), (1326, 61629), (1989, 41086), (3978, 20543)]