209217320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{402341}}^1$

素因数の和:402365

約数の個数: 32

約数和(自身を含む): 506950920

約数和(自身を除く): 297733600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 402341, 804682, 1609364, 2011705, 3218728, 4023410, 5230433, 8046820, 10460866, 16093640, 20921732, 26152165, 41843464, 52304330, 104608660, 209217320]

約数ペア:

[(1, 209217320), (2, 104608660), (4, 52304330), (5, 41843464), (8, 26152165), (10, 20921732), (13, 16093640), (20, 10460866), (26, 8046820), (40, 5230433), (52, 4023410), (65, 3218728), (104, 2011705), (130, 1609364), (260, 804682), (520, 402341)]