20138025680

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1193011}}^1$

素因数の和:1193235

約数の個数: 40

約数和(自身を含む): 47042849184

約数和(自身を除く): 26904823504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 1055, 1688, 2110, 3376, 4220, 8440, 16880, 1193011, 2386022, 4772044, 5965055, 9544088, 11930110, 19088176, 23860220, 47720440, 95440880, 251725321, 503450642, 1006901284, 1258626605, 2013802568, 2517253210, 4027605136, 5034506420, 10069012840, 20138025680]

約数ペア:

[(1, 20138025680), (2, 10069012840), (4, 5034506420), (5, 4027605136), (8, 2517253210), (10, 2013802568), (16, 1258626605), (20, 1006901284), (40, 503450642), (80, 251725321), (211, 95440880), (422, 47720440), (844, 23860220), (1055, 19088176), (1688, 11930110), (2110, 9544088), (3376, 5965055), (4220, 4772044), (8440, 2386022), (16880, 1193011)]