20198500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{199}}^1$

素因数の和:254

約数の個数: 96

約数和(自身を含む): 52416000

約数和(自身を除く): 32217500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 35, 50, 58, 70, 100, 116, 125, 140, 145, 175, 199, 203, 250, 290, 350, 398, 406, 500, 580, 700, 725, 796, 812, 875, 995, 1015, 1393, 1450, 1750, 1990, 2030, 2786, 2900, 3500, 3625, 3980, 4060, 4975, 5075, 5572, 5771, 6965, 7250, 9950, 10150, 11542, 13930, 14500, 19900, 20300, 23084, 24875, 25375, 27860, 28855, 34825, 40397, 49750, 50750, 57710, 69650, 80794, 99500, 101500, 115420, 139300, 144275, 161588, 174125, 201985, 288550, 348250, 403970, 577100, 696500, 721375, 807940, 1009925, 1442750, 2019850, 2885500, 4039700, 5049625, 10099250, 20198500]

約数ペア:

[(1, 20198500), (2, 10099250), (4, 5049625), (5, 4039700), (7, 2885500), (10, 2019850), (14, 1442750), (20, 1009925), (25, 807940), (28, 721375), (29, 696500), (35, 577100), (50, 403970), (58, 348250), (70, 288550), (100, 201985), (116, 174125), (125, 161588), (140, 144275), (145, 139300), (175, 115420), (199, 101500), (203, 99500), (250, 80794), (290, 69650), (350, 57710), (398, 50750), (406, 49750), (500, 40397), (580, 34825), (700, 28855), (725, 27860), (796, 25375), (812, 24875), (875, 23084), (995, 20300), (1015, 19900), (1393, 14500), (1450, 13930), (1750, 11542), (1990, 10150), (2030, 9950), (2786, 7250), (2900, 6965), (3500, 5771), (3625, 5572), (3980, 5075), (4060, 4975)]