21403595

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{457}}^1$

素因数の和:527

約数の個数: 32

約数和(自身を含む): 29678400

約数和(自身を除く): 8274805

約数列:

[1, 5, 17, 19, 29, 85, 95, 145, 323, 457, 493, 551, 1615, 2285, 2465, 2755, 7769, 8683, 9367, 13253, 38845, 43415, 46835, 66265, 147611, 225301, 251807, 738055, 1126505, 1259035, 4280719, 21403595]

約数ペア:

[(1, 21403595), (5, 4280719), (17, 1259035), (19, 1126505), (29, 738055), (85, 251807), (95, 225301), (145, 147611), (323, 66265), (457, 46835), (493, 43415), (551, 38845), (1615, 13253), (2285, 9367), (2465, 8683), (2755, 7769)]