18180505

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 26046720

約数和(自身を除く): 7866215

約数列:

[1, 5, 7, 35, 37, 101, 139, 185, 259, 505, 695, 707, 973, 1295, 3535, 3737, 4865, 5143, 14039, 18685, 25715, 26159, 36001, 70195, 98273, 130795, 180005, 491365, 519443, 2597215, 3636101, 18180505]

約数ペア:

[(1, 18180505), (5, 3636101), (7, 2597215), (35, 519443), (37, 491365), (101, 180005), (139, 130795), (185, 98273), (259, 70195), (505, 36001), (695, 26159), (707, 25715), (973, 18685), (1295, 14039), (3535, 5143), (3737, 4865)]