20806490

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1483}}^1$

素因数の和:1574

約数の個数: 32

約数和(自身を含む): 39747456

約数和(自身を除く): 18940966

約数列:

[1, 2, 5, 10, 23, 46, 61, 115, 122, 230, 305, 610, 1403, 1483, 2806, 2966, 7015, 7415, 14030, 14830, 34109, 68218, 90463, 170545, 180926, 341090, 452315, 904630, 2080649, 4161298, 10403245, 20806490]

約数ペア:

[(1, 20806490), (2, 10403245), (5, 4161298), (10, 2080649), (23, 904630), (46, 452315), (61, 341090), (115, 180926), (122, 170545), (230, 90463), (305, 68218), (610, 34109), (1403, 14830), (1483, 14030), (2806, 7415), (2966, 7015)]