21764861

素因数分解:

${\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:380

約数の個数: 16

約数和(自身を含む): 23659200

約数和(自身を除く): 1894339

約数列:

[1, 19, 61, 89, 211, 1159, 1691, 4009, 5429, 12871, 18779, 103151, 244549, 356801, 1145519, 21764861]

約数ペア:

[(1, 21764861), (19, 1145519), (61, 356801), (89, 244549), (211, 103151), (1159, 18779), (1691, 12871), (4009, 5429)]