21407607

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 36167040

約数和(自身を除く): 14759433

約数列:

[1, 3, 9, 13, 17, 39, 47, 51, 117, 141, 153, 221, 229, 423, 611, 663, 687, 799, 1833, 1989, 2061, 2397, 2977, 3893, 5499, 7191, 8931, 10387, 10763, 11679, 26793, 31161, 32289, 35037, 50609, 93483, 96867, 139919, 151827, 182971, 419757, 455481, 548913, 1259271, 1646739, 2378623, 7135869, 21407607]

約数ペア:

[(1, 21407607), (3, 7135869), (9, 2378623), (13, 1646739), (17, 1259271), (39, 548913), (47, 455481), (51, 419757), (117, 182971), (141, 151827), (153, 139919), (221, 96867), (229, 93483), (423, 50609), (611, 35037), (663, 32289), (687, 31161), (799, 26793), (1833, 11679), (1989, 10763), (2061, 10387), (2397, 8931), (2977, 7191), (3893, 5499)]