18780139

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1303}}^1$

素因数の和:1410

約数の個数: 16

約数和(自身を含む): 22533120

約数和(自身を除く): 3752981

約数列:

[1, 7, 29, 71, 203, 497, 1303, 2059, 9121, 14413, 37787, 92513, 264509, 647591, 2682877, 18780139]

約数ペア:

[(1, 18780139), (7, 2682877), (29, 647591), (71, 264509), (203, 92513), (497, 37787), (1303, 14413), (2059, 9121)]