65354840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{37997}}^1$

素因数の和:38051

約数の個数: 32

約数和(自身を含む): 150472080

約数和(自身を除く): 85117240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 37997, 75994, 151988, 189985, 303976, 379970, 759940, 1519880, 1633871, 3267742, 6535484, 8169355, 13070968, 16338710, 32677420, 65354840]

約数ペア:

[(1, 65354840), (2, 32677420), (4, 16338710), (5, 13070968), (8, 8169355), (10, 6535484), (20, 3267742), (40, 1633871), (43, 1519880), (86, 759940), (172, 379970), (215, 303976), (344, 189985), (430, 151988), (860, 75994), (1720, 37997)]