209871309

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{457}}^1\times {\mathrm{3257}}^1$

素因数の和:3764

約数の個数: 16

約数和(自身を含む): 286495488

約数和(自身を除く): 76624179

約数列:

[1, 3, 47, 141, 457, 1371, 3257, 9771, 21479, 64437, 153079, 459237, 1488449, 4465347, 69957103, 209871309]

約数ペア:

[(1, 209871309), (3, 69957103), (47, 4465347), (141, 1488449), (457, 459237), (1371, 153079), (3257, 64437), (9771, 21479)]