18668235

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 30970368

約数和(自身を除く): 12302133

約数列:

[1, 3, 5, 15, 43, 103, 129, 215, 281, 309, 515, 645, 843, 1405, 1545, 4215, 4429, 12083, 13287, 22145, 28943, 36249, 60415, 66435, 86829, 144715, 181245, 434145, 1244549, 3733647, 6222745, 18668235]

約数ペア:

[(1, 18668235), (3, 6222745), (5, 3733647), (15, 1244549), (43, 434145), (103, 181245), (129, 144715), (215, 86829), (281, 66435), (309, 60415), (515, 36249), (645, 28943), (843, 22145), (1405, 13287), (1545, 12083), (4215, 4429)]