420500

素因数分解:

$2^2\times 5^3\times {\mathrm{29}}^2$

素因数の和:77

約数の個数: 36

約数和(自身を含む): 951132

約数和(自身を除く): 530632

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 125, 145, 250, 290, 500, 580, 725, 841, 1450, 1682, 2900, 3364, 3625, 4205, 7250, 8410, 14500, 16820, 21025, 42050, 84100, 105125, 210250, 420500]

約数ペア:

[(1, 420500), (2, 210250), (4, 105125), (5, 84100), (10, 42050), (20, 21025), (25, 16820), (29, 14500), (50, 8410), (58, 7250), (100, 4205), (116, 3625), (125, 3364), (145, 2900), (250, 1682), (290, 1450), (500, 841), (580, 725)]