18072020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2311}}^1$

素因数の和:2360

約数の個数: 48

約数和(自身を含む): 41948928

約数和(自身を除く): 23876908

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 2311, 3910, 4622, 7820, 9244, 11555, 23110, 39287, 46220, 53153, 78574, 106306, 157148, 196435, 212612, 265765, 392870, 531530, 785740, 903601, 1063060, 1807202, 3614404, 4518005, 9036010, 18072020]

約数ペア:

[(1, 18072020), (2, 9036010), (4, 4518005), (5, 3614404), (10, 1807202), (17, 1063060), (20, 903601), (23, 785740), (34, 531530), (46, 392870), (68, 265765), (85, 212612), (92, 196435), (115, 157148), (170, 106306), (230, 78574), (340, 53153), (391, 46220), (460, 39287), (782, 23110), (1564, 11555), (1955, 9244), (2311, 7820), (3910, 4622)]