21284276

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{2143}}^1$

素因数の和:2351

約数の個数: 24

約数和(自身を含む): 40341504

約数和(自身を除く): 19057228

約数列:

[1, 2, 4, 13, 26, 52, 191, 382, 764, 2143, 2483, 4286, 4966, 8572, 9932, 27859, 55718, 111436, 409313, 818626, 1637252, 5321069, 10642138, 21284276]

約数ペア:

[(1, 21284276), (2, 10642138), (4, 5321069), (13, 1637252), (26, 818626), (52, 409313), (191, 111436), (382, 55718), (764, 27859), (2143, 9932), (2483, 8572), (4286, 4966)]