401028520

素因数分解:

$2^3\times 5^1\times {\mathrm{10025713}}^1$

素因数の和:10025724

約数の個数: 16

約数和(自身を含む): 902314260

約数和(自身を除く): 501285740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 10025713, 20051426, 40102852, 50128565, 80205704, 100257130, 200514260, 401028520]

約数ペア:

[(1, 401028520), (2, 200514260), (4, 100257130), (5, 80205704), (8, 50128565), (10, 40102852), (20, 20051426), (40, 10025713)]