209527720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{308129}}^1$

素因数の和:308157

約数の個数: 32

約数和(自身を含む): 499170600

約数和(自身を除く): 289642880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 308129, 616258, 1232516, 1540645, 2465032, 3081290, 5238193, 6162580, 10476386, 12325160, 20952772, 26190965, 41905544, 52381930, 104763860, 209527720]

約数ペア:

[(1, 209527720), (2, 104763860), (4, 52381930), (5, 41905544), (8, 26190965), (10, 20952772), (17, 12325160), (20, 10476386), (34, 6162580), (40, 5238193), (68, 3081290), (85, 2465032), (136, 1540645), (170, 1232516), (340, 616258), (680, 308129)]