19987318

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{661}}^1\times {\mathrm{1163}}^1$

素因数の和:1839

約数の個数: 16

約数和(自身を含む): 32363856

約数和(自身を除く): 12376538

約数列:

[1, 2, 13, 26, 661, 1163, 1322, 2326, 8593, 15119, 17186, 30238, 768743, 1537486, 9993659, 19987318]

約数ペア:

[(1, 19987318), (2, 9993659), (13, 1537486), (26, 768743), (661, 30238), (1163, 17186), (1322, 15119), (2326, 8593)]