20100879

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{353}}^1$

素因数の和:421

約数の個数: 40

約数和(自身を含む): 32553840

約数和(自身を除く): 12452961

約数列:

[1, 3, 9, 19, 27, 37, 57, 81, 111, 171, 333, 353, 513, 703, 999, 1059, 1539, 2109, 2997, 3177, 6327, 6707, 9531, 13061, 18981, 20121, 28593, 39183, 56943, 60363, 117549, 181089, 248159, 352647, 543267, 744477, 1057941, 2233431, 6700293, 20100879]

約数ペア:

[(1, 20100879), (3, 6700293), (9, 2233431), (19, 1057941), (27, 744477), (37, 543267), (57, 352647), (81, 248159), (111, 181089), (171, 117549), (333, 60363), (353, 56943), (513, 39183), (703, 28593), (999, 20121), (1059, 18981), (1539, 13061), (2109, 9531), (2997, 6707), (3177, 6327)]