28987180

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6869}}^1$

素因数の和:7089

約数の個数: 24

約数和(自身を含む): 61170480

約数和(自身を除く): 32183300

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 6869, 13738, 27476, 34345, 68690, 137380, 1449359, 2898718, 5797436, 7246795, 14493590, 28987180]

約数ペア:

[(1, 28987180), (2, 14493590), (4, 7246795), (5, 5797436), (10, 2898718), (20, 1449359), (211, 137380), (422, 68690), (844, 34345), (1055, 27476), (2110, 13738), (4220, 6869)]