21642381

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{821}}^1$

素因数の和:957

約数の個数: 24

約数和(自身を含む): 32699160

約数和(自身を除く): 11056779

約数列:

[1, 3, 9, 29, 87, 101, 261, 303, 821, 909, 2463, 2929, 7389, 8787, 23809, 26361, 71427, 82921, 214281, 248763, 746289, 2404709, 7214127, 21642381]

約数ペア:

[(1, 21642381), (3, 7214127), (9, 2404709), (29, 746289), (87, 248763), (101, 214281), (261, 82921), (303, 71427), (821, 26361), (909, 23809), (2463, 8787), (2929, 7389)]