20388729

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{397}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 30948480

約数和(自身を除く): 10559751

約数列:

[1, 3, 17, 19, 51, 53, 57, 159, 323, 397, 901, 969, 1007, 1191, 2703, 3021, 6749, 7543, 17119, 20247, 21041, 22629, 51357, 63123, 128231, 357697, 384693, 399779, 1073091, 1199337, 6796243, 20388729]

約数ペア:

[(1, 20388729), (3, 6796243), (17, 1199337), (19, 1073091), (51, 399779), (53, 384693), (57, 357697), (159, 128231), (323, 63123), (397, 51357), (901, 22629), (969, 21041), (1007, 20247), (1191, 17119), (2703, 7543), (3021, 6749)]