345959720

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{13451}}^1$

素因数の和:14105

約数の個数: 32

約数和(自身を含む): 779677920

約数和(自身を除く): 433718200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 5144, 6430, 12860, 13451, 25720, 26902, 53804, 67255, 107608, 134510, 269020, 538040, 8648993, 17297986, 34595972, 43244965, 69191944, 86489930, 172979860, 345959720]

約数ペア:

[(1, 345959720), (2, 172979860), (4, 86489930), (5, 69191944), (8, 43244965), (10, 34595972), (20, 17297986), (40, 8648993), (643, 538040), (1286, 269020), (2572, 134510), (3215, 107608), (5144, 67255), (6430, 53804), (12860, 26902), (13451, 25720)]