21220403

素因数分解:

${\mathrm{17}}^2\times {\mathrm{101}}^1\times {\mathrm{727}}^1$

素因数の和:862

約数の個数: 12

約数和(自身を含む): 22796592

約数和(自身を除く): 1576189

約数列:

[1, 17, 101, 289, 727, 1717, 12359, 29189, 73427, 210103, 1248259, 21220403]

約数ペア:

[(1, 21220403), (17, 1248259), (101, 210103), (289, 73427), (727, 29189), (1717, 12359)]