212399720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{408461}}^1$

素因数の和:408485

約数の個数: 32

約数和(自身を含む): 514662120

約数和(自身を除く): 302262400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 408461, 816922, 1633844, 2042305, 3267688, 4084610, 5309993, 8169220, 10619986, 16338440, 21239972, 26549965, 42479944, 53099930, 106199860, 212399720]

約数ペア:

[(1, 212399720), (2, 106199860), (4, 53099930), (5, 42479944), (8, 26549965), (10, 21239972), (13, 16338440), (20, 10619986), (26, 8169220), (40, 5309993), (52, 4084610), (65, 3267688), (104, 2042305), (130, 1633844), (260, 816922), (520, 408461)]