217433985

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{179}}^1\times {\mathrm{1723}}^1$

素因数の和:1957

約数の個数: 32

約数和(自身を含む): 357488640

約数和(自身を除く): 140054655

約数列:

[1, 3, 5, 15, 47, 141, 179, 235, 537, 705, 895, 1723, 2685, 5169, 8413, 8615, 25239, 25845, 42065, 80981, 126195, 242943, 308417, 404905, 925251, 1214715, 1542085, 4626255, 14495599, 43486797, 72477995, 217433985]

約数ペア:

[(1, 217433985), (3, 72477995), (5, 43486797), (15, 14495599), (47, 4626255), (141, 1542085), (179, 1214715), (235, 925251), (537, 404905), (705, 308417), (895, 242943), (1723, 126195), (2685, 80981), (5169, 42065), (8413, 25845), (8615, 25239)]