19983180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^3\times {\mathrm{971}}^1$

素因数の和:1004

約数の個数: 96

約数和(自身を含む): 65318400

約数和(自身を除く): 45335220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 343, 420, 490, 588, 686, 735, 971, 980, 1029, 1372, 1470, 1715, 1942, 2058, 2913, 2940, 3430, 3884, 4116, 4855, 5145, 5826, 6797, 6860, 9710, 10290, 11652, 13594, 14565, 19420, 20391, 20580, 27188, 29130, 33985, 40782, 47579, 58260, 67970, 81564, 95158, 101955, 135940, 142737, 190316, 203910, 237895, 285474, 333053, 407820, 475790, 570948, 666106, 713685, 951580, 999159, 1332212, 1427370, 1665265, 1998318, 2854740, 3330530, 3996636, 4995795, 6661060, 9991590, 19983180]

約数ペア:

[(1, 19983180), (2, 9991590), (3, 6661060), (4, 4995795), (5, 3996636), (6, 3330530), (7, 2854740), (10, 1998318), (12, 1665265), (14, 1427370), (15, 1332212), (20, 999159), (21, 951580), (28, 713685), (30, 666106), (35, 570948), (42, 475790), (49, 407820), (60, 333053), (70, 285474), (84, 237895), (98, 203910), (105, 190316), (140, 142737), (147, 135940), (196, 101955), (210, 95158), (245, 81564), (294, 67970), (343, 58260), (420, 47579), (490, 40782), (588, 33985), (686, 29130), (735, 27188), (971, 20580), (980, 20391), (1029, 19420), (1372, 14565), (1470, 13594), (1715, 11652), (1942, 10290), (2058, 9710), (2913, 6860), (2940, 6797), (3430, 5826), (3884, 5145), (4116, 4855)]