65998120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{38371}}^1$

素因数の和:38425

約数の個数: 32

約数和(自身を含む): 151953120

約数和(自身を除く): 85955000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 38371, 76742, 153484, 191855, 306968, 383710, 767420, 1534840, 1649953, 3299906, 6599812, 8249765, 13199624, 16499530, 32999060, 65998120]

約数ペア:

[(1, 65998120), (2, 32999060), (4, 16499530), (5, 13199624), (8, 8249765), (10, 6599812), (20, 3299906), (40, 1649953), (43, 1534840), (86, 767420), (172, 383710), (215, 306968), (344, 191855), (430, 153484), (860, 76742), (1720, 38371)]