18460975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1321}}^1$

素因数の和:1387

約数の個数: 24

約数和(自身を含む): 25244912

約数和(自身を除く): 6783937

約数列:

[1, 5, 13, 25, 43, 65, 215, 325, 559, 1075, 1321, 2795, 6605, 13975, 17173, 33025, 56803, 85865, 284015, 429325, 738439, 1420075, 3692195, 18460975]

約数ペア:

[(1, 18460975), (5, 3692195), (13, 1420075), (25, 738439), (43, 429325), (65, 284015), (215, 85865), (325, 56803), (559, 33025), (1075, 17173), (1321, 13975), (2795, 6605)]