20378690

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1\times {\mathrm{353}}^1$

素因数の和:634

約数の個数: 32

約数和(自身を含む): 38537856

約数和(自身を除く): 18159166

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 251, 353, 502, 706, 1255, 1765, 2510, 3530, 5773, 8119, 11546, 16238, 28865, 40595, 57730, 81190, 88603, 177206, 443015, 886030, 2037869, 4075738, 10189345, 20378690]

約数ペア:

[(1, 20378690), (2, 10189345), (5, 4075738), (10, 2037869), (23, 886030), (46, 443015), (115, 177206), (230, 88603), (251, 81190), (353, 57730), (502, 40595), (706, 28865), (1255, 16238), (1765, 11546), (2510, 8119), (3530, 5773)]