161720248

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{227}}^1$

素因数の和:404

約数の個数: 64

約数和(自身を含む): 331056000

約数和(自身を除く): 169335752

約数列:

[1, 2, 4, 8, 19, 38, 43, 76, 86, 109, 152, 172, 218, 227, 344, 436, 454, 817, 872, 908, 1634, 1816, 2071, 3268, 4142, 4313, 4687, 6536, 8284, 8626, 9374, 9761, 16568, 17252, 18748, 19522, 24743, 34504, 37496, 39044, 49486, 78088, 89053, 98972, 178106, 185459, 197944, 356212, 370918, 470117, 712424, 741836, 940234, 1063949, 1483672, 1880468, 2127898, 3760936, 4255796, 8511592, 20215031, 40430062, 80860124, 161720248]

約数ペア:

[(1, 161720248), (2, 80860124), (4, 40430062), (8, 20215031), (19, 8511592), (38, 4255796), (43, 3760936), (76, 2127898), (86, 1880468), (109, 1483672), (152, 1063949), (172, 940234), (218, 741836), (227, 712424), (344, 470117), (436, 370918), (454, 356212), (817, 197944), (872, 185459), (908, 178106), (1634, 98972), (1816, 89053), (2071, 78088), (3268, 49486), (4142, 39044), (4313, 37496), (4687, 34504), (6536, 24743), (8284, 19522), (8626, 18748), (9374, 17252), (9761, 16568)]