21023883

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:236

約数の個数: 36

約数和(自身を含む): 33045480

約数和(自身を除く): 12021597

約数列:

[1, 3, 9, 17, 51, 59, 137, 153, 177, 289, 411, 531, 867, 1003, 1233, 2329, 2601, 3009, 6987, 8083, 9027, 17051, 20961, 24249, 39593, 51153, 72747, 118779, 137411, 153459, 356337, 412233, 1236699, 2335987, 7007961, 21023883]

約数ペア:

[(1, 21023883), (3, 7007961), (9, 2335987), (17, 1236699), (51, 412233), (59, 356337), (137, 153459), (153, 137411), (177, 118779), (289, 72747), (411, 51153), (531, 39593), (867, 24249), (1003, 20961), (1233, 17051), (2329, 9027), (2601, 8083), (3009, 6987)]