80948704

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{661}}^1$

素因数の和:803

約数の個数: 48

約数和(自身を含む): 165155760

約数和(自身を除く): 84207056

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 89, 172, 178, 344, 356, 661, 688, 712, 1322, 1376, 1424, 2644, 2848, 3827, 5288, 7654, 10576, 15308, 21152, 28423, 30616, 56846, 58829, 61232, 113692, 117658, 122464, 227384, 235316, 454768, 470632, 909536, 941264, 1882528, 2529647, 5059294, 10118588, 20237176, 40474352, 80948704]

約数ペア:

[(1, 80948704), (2, 40474352), (4, 20237176), (8, 10118588), (16, 5059294), (32, 2529647), (43, 1882528), (86, 941264), (89, 909536), (172, 470632), (178, 454768), (344, 235316), (356, 227384), (661, 122464), (688, 117658), (712, 113692), (1322, 61232), (1376, 58829), (1424, 56846), (2644, 30616), (2848, 28423), (3827, 21152), (5288, 15308), (7654, 10576)]