21274994

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{5419}}^1$

素因数の和:5585

約数の個数: 16

約数和(自身を含む): 34601280

約数和(自身を除く): 13326286

約数列:

[1, 2, 13, 26, 151, 302, 1963, 3926, 5419, 10838, 70447, 140894, 818269, 1636538, 10637497, 21274994]

約数ペア:

[(1, 21274994), (2, 10637497), (13, 1636538), (26, 818269), (151, 140894), (302, 70447), (1963, 10838), (3926, 5419)]