64065440

素因数分解:

$2^5\times 5^1\times {\mathrm{400409}}^1$

素因数の和:400424

約数の個数: 24

約数和(自身を含む): 151354980

約数和(自身を除く): 87289540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 400409, 800818, 1601636, 2002045, 3203272, 4004090, 6406544, 8008180, 12813088, 16016360, 32032720, 64065440]

約数ペア:

[(1, 64065440), (2, 32032720), (4, 16016360), (5, 12813088), (8, 8008180), (10, 6406544), (16, 4004090), (20, 3203272), (32, 2002045), (40, 1601636), (80, 800818), (160, 400409)]