18790545

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 30942720

約数和(自身を除く): 12152175

約数列:

[1, 3, 5, 15, 79, 101, 157, 237, 303, 395, 471, 505, 785, 1185, 1515, 2355, 7979, 12403, 15857, 23937, 37209, 39895, 47571, 62015, 79285, 119685, 186045, 237855, 1252703, 3758109, 6263515, 18790545]

約数ペア:

[(1, 18790545), (3, 6263515), (5, 3758109), (15, 1252703), (79, 237855), (101, 186045), (157, 119685), (237, 79285), (303, 62015), (395, 47571), (471, 39895), (505, 37209), (785, 23937), (1185, 15857), (1515, 12403), (2355, 7979)]