18986895

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{251}}^1$

素因数の和:344

約数の個数: 36

約数和(自身を含む): 33867288

約数和(自身を除く): 14880393

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 251, 369, 615, 753, 1255, 1681, 1845, 2259, 3765, 5043, 8405, 10291, 11295, 15129, 25215, 30873, 51455, 75645, 92619, 154365, 421931, 463095, 1265793, 2109655, 3797379, 6328965, 18986895]

約数ペア:

[(1, 18986895), (3, 6328965), (5, 3797379), (9, 2109655), (15, 1265793), (41, 463095), (45, 421931), (123, 154365), (205, 92619), (251, 75645), (369, 51455), (615, 30873), (753, 25215), (1255, 15129), (1681, 11295), (1845, 10291), (2259, 8405), (3765, 5043)]