21131119

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{397}}^1$

素因数の和:546

約数の個数: 16

約数和(自身を含む): 23383296

約数和(自身を除く): 2252177

約数列:

[1, 17, 31, 101, 397, 527, 1717, 3131, 6749, 12307, 40097, 53227, 209219, 681649, 1243007, 21131119]

約数ペア:

[(1, 21131119), (17, 1243007), (31, 681649), (101, 209219), (397, 53227), (527, 40097), (1717, 12307), (3131, 6749)]