21156220

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{17929}}^1$

素因数の和:17997

約数の個数: 24

約数和(自身を含む): 45183600

約数和(自身を除く): 24027380

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180, 17929, 35858, 71716, 89645, 179290, 358580, 1057811, 2115622, 4231244, 5289055, 10578110, 21156220]

約数ペア:

[(1, 21156220), (2, 10578110), (4, 5289055), (5, 4231244), (10, 2115622), (20, 1057811), (59, 358580), (118, 179290), (236, 89645), (295, 71716), (590, 35858), (1180, 17929)]