401028280

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{32237}}^1$

素因数の和:32559

約数の個数: 32

約数和(自身を含む): 905243040

約数和(自身を除く): 504214760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 6220, 12440, 32237, 64474, 128948, 161185, 257896, 322370, 644740, 1289480, 10025707, 20051414, 40102828, 50128535, 80205656, 100257070, 200514140, 401028280]

約数ペア:

[(1, 401028280), (2, 200514140), (4, 100257070), (5, 80205656), (8, 50128535), (10, 40102828), (20, 20051414), (40, 10025707), (311, 1289480), (622, 644740), (1244, 322370), (1555, 257896), (2488, 161185), (3110, 128948), (6220, 64474), (12440, 32237)]