20493418

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{199}}^1$

素因数の和:394

約数の個数: 32

約数和(自身を含む): 35020800

約数和(自身を除く): 14527382

約数列:

[1, 2, 11, 22, 31, 62, 151, 199, 302, 341, 398, 682, 1661, 2189, 3322, 4378, 4681, 6169, 9362, 12338, 30049, 51491, 60098, 67859, 102982, 135718, 330539, 661078, 931519, 1863038, 10246709, 20493418]

約数ペア:

[(1, 20493418), (2, 10246709), (11, 1863038), (22, 931519), (31, 661078), (62, 330539), (151, 135718), (199, 102982), (302, 67859), (341, 60098), (398, 51491), (682, 30049), (1661, 12338), (2189, 9362), (3322, 6169), (4378, 4681)]