21217053

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{137}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 35332416

約数和(自身を除く): 14115363

約数列:

[1, 3, 11, 13, 19, 33, 39, 57, 137, 143, 209, 247, 361, 411, 429, 627, 741, 1083, 1507, 1781, 2603, 2717, 3971, 4521, 4693, 5343, 7809, 8151, 11913, 14079, 19591, 28633, 33839, 49457, 51623, 58773, 85899, 101517, 148371, 154869, 372229, 544027, 642941, 1116687, 1632081, 1928823, 7072351, 21217053]

約数ペア:

[(1, 21217053), (3, 7072351), (11, 1928823), (13, 1632081), (19, 1116687), (33, 642941), (39, 544027), (57, 372229), (137, 154869), (143, 148371), (209, 101517), (247, 85899), (361, 58773), (411, 51623), (429, 49457), (627, 33839), (741, 28633), (1083, 19591), (1507, 14079), (1781, 11913), (2603, 8151), (2717, 7809), (3971, 5343), (4521, 4693)]