218491990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1285247}}^1$

素因数の和:1285271

約数の個数: 16

約数和(自身を含む): 416420352

約数和(自身を除く): 197928362

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 1285247, 2570494, 6426235, 12852470, 21849199, 43698398, 109245995, 218491990]

約数ペア:

[(1, 218491990), (2, 109245995), (5, 43698398), (10, 21849199), (17, 12852470), (34, 6426235), (85, 2570494), (170, 1285247)]