206965720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{398011}}^1$

素因数の和:398035

約数の個数: 32

約数和(自身を含む): 501495120

約数和(自身を除く): 294529400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 398011, 796022, 1592044, 1990055, 3184088, 3980110, 5174143, 7960220, 10348286, 15920440, 20696572, 25870715, 41393144, 51741430, 103482860, 206965720]

約数ペア:

[(1, 206965720), (2, 103482860), (4, 51741430), (5, 41393144), (8, 25870715), (10, 20696572), (13, 15920440), (20, 10348286), (26, 7960220), (40, 5174143), (52, 3980110), (65, 3184088), (104, 1990055), (130, 1592044), (260, 796022), (520, 398011)]