19783642

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{5231}}^1$

素因数の和:5325

約数の個数: 16

約数和(自身を含む): 31140864

約数和(自身を除く): 11357222

約数列:

[1, 2, 31, 61, 62, 122, 1891, 3782, 5231, 10462, 162161, 319091, 324322, 638182, 9891821, 19783642]

約数ペア:

[(1, 19783642), (2, 9891821), (31, 638182), (61, 324322), (62, 319091), (122, 162161), (1891, 10462), (3782, 5231)]