21643921

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1249}}^1$

素因数の和:1336

約数の個数: 16

約数和(自身を含む): 24640000

約数和(自身を除く): 2996079

約数列:

[1, 13, 31, 43, 403, 559, 1249, 1333, 16237, 17329, 38719, 53707, 503347, 698191, 1664917, 21643921]

約数ペア:

[(1, 21643921), (13, 1664917), (31, 698191), (43, 503347), (403, 53707), (559, 38719), (1249, 17329), (1333, 16237)]