20373225

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2$

素因数の和:107

約数の個数: 72

約数和(自身を含む): 38881440

約数和(自身を除く): 18508215

約数列:

[1, 3, 5, 15, 17, 19, 25, 29, 51, 57, 75, 85, 87, 95, 145, 255, 285, 323, 425, 435, 475, 493, 551, 725, 841, 969, 1275, 1425, 1479, 1615, 1653, 2175, 2465, 2523, 2755, 4205, 4845, 7395, 8075, 8265, 9367, 12325, 12615, 13775, 14297, 15979, 21025, 24225, 28101, 36975, 41325, 42891, 46835, 47937, 63075, 71485, 79895, 140505, 214455, 234175, 239685, 271643, 357425, 399475, 702525, 814929, 1072275, 1198425, 1358215, 4074645, 6791075, 20373225]

約数ペア:

[(1, 20373225), (3, 6791075), (5, 4074645), (15, 1358215), (17, 1198425), (19, 1072275), (25, 814929), (29, 702525), (51, 399475), (57, 357425), (75, 271643), (85, 239685), (87, 234175), (95, 214455), (145, 140505), (255, 79895), (285, 71485), (323, 63075), (425, 47937), (435, 46835), (475, 42891), (493, 41325), (551, 36975), (725, 28101), (841, 24225), (969, 21025), (1275, 15979), (1425, 14297), (1479, 13775), (1615, 12615), (1653, 12325), (2175, 9367), (2465, 8265), (2523, 8075), (2755, 7395), (4205, 4845)]